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Finding the Fourth Proportional to 57,472.65, 79,310.22 and 31,978.17

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Solution

The fourth proportional to 57,472.65, 79,310.22 and 31,978.17 is: 44,128.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,472.65 : 79,310.22 = 31,978.17 : x
  2. Step 2: Convert to fraction form
    57,472.65/79,310.22 = 31,978.17/x
  3. Step 3: Cross multiply
    57,472.65x = 79,310.22 × 31,978.17
  4. Step 4: Simplify right side
    57,472.65x = 2,536,195,697.90
  5. Step 5: Solve for x
    x = 2,536,195,697.90/57,472.65
  6. Step 6: Final answer
    x = 44,128.74

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1.5x scale

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.