Finding the Fourth Proportional to 87,711.96, 121,042.43 and 47,425.70
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Solution
The fourth proportional to 87,711.96, 121,042.43 and 47,425.70 is: 65,447.42
Step by Step Solution
- Step 1: Write the proportion equation
87,711.96 : 121,042.43 = 47,425.70 : x - Step 2: Convert to fraction form
87,711.96/121,042.43 = 47,425.70/x - Step 3: Cross multiply
87,711.96x = 121,042.43 × 47,425.70 - Step 4: Simplify right side
87,711.96x = 5,740,521,367.24 - Step 5: Solve for x
x = 5,740,521,367.24/87,711.96 - Step 6: Final answer
x = 65,447.42
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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.