Finding the Fourth Proportional to 87,613.96, 131,387.28 and 68,930.68
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Solution
The fourth proportional to 87,613.96, 131,387.28 and 68,930.68 is: 103,369.54
Step by Step Solution
- Step 1: Write the proportion equation
87,613.96 : 131,387.28 = 68,930.68 : x - Step 2: Convert to fraction form
87,613.96/131,387.28 = 68,930.68/x - Step 3: Cross multiply
87,613.96x = 131,387.28 × 68,930.68 - Step 4: Simplify right side
87,613.96x = 9,056,614,553.75 - Step 5: Solve for x
x = 9,056,614,553.75/87,613.96 - Step 6: Final answer
x = 103,369.54
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.