Finding the Fourth Proportional to 113,432.21, 170,253.57 and 57,311.74
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Solution
The fourth proportional to 113,432.21, 170,253.57 and 57,311.74 is: 86,020.79
Step by Step Solution
- Step 1: Write the proportion equation
113,432.21 : 170,253.57 = 57,311.74 : x - Step 2: Convert to fraction form
113,432.21/170,253.57 = 57,311.74/x - Step 3: Cross multiply
113,432.21x = 170,253.57 × 57,311.74 - Step 4: Simplify right side
113,432.21x = 9,757,528,337.91 - Step 5: Solve for x
x = 9,757,528,337.91/113,432.21 - Step 6: Final answer
x = 86,020.79
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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.