Finding the Fourth Proportional to 100,041.79, 138,062.10 and 57,613.99
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Solution
The fourth proportional to 100,041.79, 138,062.10 and 57,613.99 is: 79,509.86
Step by Step Solution
- Step 1: Write the proportion equation
100,041.79 : 138,062.10 = 57,613.99 : x - Step 2: Convert to fraction form
100,041.79/138,062.10 = 57,613.99/x - Step 3: Cross multiply
100,041.79x = 138,062.10 × 57,613.99 - Step 4: Simplify right side
100,041.79x = 7,954,308,448.78 - Step 5: Solve for x
x = 7,954,308,448.78/100,041.79 - Step 6: Final answer
x = 79,509.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.