89 is what percent of 1087.15 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 1087.15 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 1087.15, so we can write it down as 100%=1087.15.
4. We know, that x% equals 89 of the output value, so we can write it down as x%=89.
5. Now we have two simple equations:
1) 100%=1087.15
2) x%=89
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=1087.15/89
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 89 is what percent of 1087.15

100%/x%=1087.15/89
(100/x)*x=(1087.15/89)*x       - we multiply both sides of the equation by x
100=12.215168539326*x       - we divide both sides of the equation by (12.215168539326) to get x
100/12.215168539326=x
8.1865427953824=x
x=8.1865427953824

now we have:
89 is 8.1865427953824% of 1087.15