SOLUTION: Can you please help with a step by step on how this solution is determined? 101.95/(1+z4)^4=94.3407 (1+z4)^4=101.95/94.3407 z4=0.019582 How does the numerator of 101.95

Question 436475: Can you please help with a step by step on how this solution is determined?
101.95/(1+z4)^4=94.3407
(1+z4)^4=101.95/94.3407
z4=0.019582
How does the numerator of 101.95 swap sides?
How does (1+z4)^4 get reduced to z4?
I can't seem to agree with the z4=0.019582 solution.
Thank you for your help
Answer by shree840(260) (Show Source): You can put this solution on YOUR website!
101.95/(1+z4)^4=94.3407/1
cross multiply
1+z4)^4*94.3407=101.95*1
(1+z4)^4=101.95/94.3407=1.08065
take the 4th root or raise both sides to the power of 1/4 or .25
1+z4=1.01958
z4=1.01958-1=.01958 Ans
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