Finding the Fourth Proportional to 87,851.91, 121,235.45 and 47,565.70
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Solution
The fourth proportional to 87,851.91, 121,235.45 and 47,565.70 is: 65,640.57
Step by Step Solution
- Step 1: Write the proportion equation
87,851.91 : 121,235.45 = 47,565.70 : x - Step 2: Convert to fraction form
87,851.91/121,235.45 = 47,565.70/x - Step 3: Cross multiply
87,851.91x = 121,235.45 × 47,565.70 - Step 4: Simplify right side
87,851.91x = 5,766,649,044.07 - Step 5: Solve for x
x = 5,766,649,044.07/87,851.91 - Step 6: Final answer
x = 65,640.57
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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.