# Forecasting help

#### computer120

##### New Member
Hi, I'm having trouble with this problem

Construct a forecasting worksheet to calculate:

1. the number of new clients each month, and
2. the total client base (cumulative number of clients signed up) each month.

In your model, make projections for 60 months (Periods) for the two scenarios below:

Scenario 1: Constant Market - Total market potential is 1,000,000 customers. Each month you sign up2% of customers in the market that have not yet signed up.

Scenario 2: Growing Market - Total market potential is initially 1,000,000 customers but grows at 1%per month. Each month you sign up 2% of customers in the market that have not yet signedup.

What functions am I suppose to use

Thank you

### Excel Facts

Get help while writing formula
Click the italics "fx" icon to the left of the formula bar to open the Functions Arguments dialog. Help is displayed for each argument.

#### pedro-egoli

##### Well-known Member
You could try something like this for Scenario 1
Excel Workbook
ABC
2Scenario 1
3Start base1,000,000
6ist month20,000980,000
72nd month19,600960,400
83rd month19,208941,192
94th month18,824922,368
Sheet2

And for Scenario 2
Excel Workbook
ABC
11Scenario 2
12Start base1,000,000
13Monthly growth of base1%
161st month20,000989,800
172nd month19,796979,704
183rd month19,594969,711
194th month19,394959,820
Sheet2

#### computer120

##### New Member
Thank you! its just what I was looking for. Do I have to manually input those functions in each cell or is there a way to apply it through periods 1-60
Thanks

#### pedro-egoli

##### Well-known Member
Thats good and there is a way to apply it to all cells as set out below.
You will note that in both scenarios the formulas are different as follows
Scenario 1
B6 and B7
C6 AND C7

So enter these as on example.
Now if you highlight cells B7 and C7 you will notice a little black box (fill handle)on bottom right of C7 . Hover your cursor over the fill handle and a crosshair will come up .
While holding left mouse button drag the fill handle as far down as you need and it will fill the cells in columns B and C
So far as column A is concerned you might be best to name the cells Jan 2018 , Feb 2018 etc and perform the same action as above with fill handle.
Scenario 2.
B16 and B17
C16 and C17
Enter as per example

Perform the same actions as outlined above in Scenario 1 starting with highlighting cells B17 and C17.

If you google “fill handle excel” you will get heaps of instructions
Good luck