Finding the Fourth Proportional to 261,397.86, 392,065.62 and 71,877.48
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Solution
The fourth proportional to 261,397.86, 392,065.62 and 71,877.48 is: 107,807.65
Step by Step Solution
- Step 1: Write the proportion equation
261,397.86 : 392,065.62 = 71,877.48 : x - Step 2: Convert to fraction form
261,397.86/392,065.62 = 71,877.48/x - Step 3: Cross multiply
261,397.86x = 392,065.62 × 71,877.48 - Step 4: Simplify right side
261,397.86x = 28,180,688,760.24 - Step 5: Solve for x
x = 28,180,688,760.24/261,397.86 - Step 6: Final answer
x = 107,807.65
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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.