Finding the Fourth Proportional to 87,356.43, 131,034.60 and 69,743.79
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Solution
The fourth proportional to 87,356.43, 131,034.60 and 69,743.79 is: 104,615.65
Step by Step Solution
- Step 1: Write the proportion equation
87,356.43 : 131,034.60 = 69,743.79 : x - Step 2: Convert to fraction form
87,356.43/131,034.60 = 69,743.79/x - Step 3: Cross multiply
87,356.43x = 131,034.60 × 69,743.79 - Step 4: Simplify right side
87,356.43x = 9,138,849,625.13 - Step 5: Solve for x
x = 9,138,849,625.13/87,356.43 - Step 6: Final answer
x = 104,615.65
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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.