Finding the Fourth Proportional to 87,831.97, 121,207.98 and 47,545.72
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Solution
The fourth proportional to 87,831.97, 121,207.98 and 47,545.72 is: 65,613.02
Step by Step Solution
- Step 1: Write the proportion equation
87,831.97 : 121,207.98 = 47,545.72 : x - Step 2: Convert to fraction form
87,831.97/121,207.98 = 47,545.72/x - Step 3: Cross multiply
87,831.97x = 121,207.98 × 47,545.72 - Step 4: Simplify right side
87,831.97x = 5,762,920,998.61 - Step 5: Solve for x
x = 5,762,920,998.61/87,831.97 - Step 6: Final answer
x = 65,613.02
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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.