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Finding the Fourth Proportional to 57,772.76, 86,672.10 and 18,331.16

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Solution

The fourth proportional to 57,772.76, 86,672.10 and 18,331.16 is: 27,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,772.76 : 86,672.10 = 18,331.16 : x
  2. Step 2: Convert to fraction form
    57,772.76/86,672.10 = 18,331.16/x
  3. Step 3: Cross multiply
    57,772.76x = 86,672.10 × 18,331.16
  4. Step 4: Simplify right side
    57,772.76x = 1,588,800,132.64
  5. Step 5: Solve for x
    x = 1,588,800,132.64/57,772.76
  6. Step 6: Final answer
    x = 27,500.85

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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.