Finding the Fourth Proportional to 84,540.96, 126,877.12 and 42,463.20
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Solution
The fourth proportional to 84,540.96, 126,877.12 and 42,463.20 is: 63,727.79
Step by Step Solution
- Step 1: Write the proportion equation
84,540.96 : 126,877.12 = 42,463.20 : x - Step 2: Convert to fraction form
84,540.96/126,877.12 = 42,463.20/x - Step 3: Cross multiply
84,540.96x = 126,877.12 × 42,463.20 - Step 4: Simplify right side
84,540.96x = 5,387,608,521.98 - Step 5: Solve for x
x = 5,387,608,521.98/84,540.96 - Step 6: Final answer
x = 63,727.79
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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.