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Finding the Fourth Proportional to 85,171.68, 127,757.52 and 38,437.92

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Solution

The fourth proportional to 85,171.68, 127,757.52 and 38,437.92 is: 57,656.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,171.68 : 127,757.52 = 38,437.92 : x
  2. Step 2: Convert to fraction form
    85,171.68/127,757.52 = 38,437.92/x
  3. Step 3: Cross multiply
    85,171.68x = 127,757.52 × 38,437.92
  4. Step 4: Simplify right side
    85,171.68x = 4,910,733,333.16
  5. Step 5: Solve for x
    x = 4,910,733,333.16/85,171.68
  6. Step 6: Final answer
    x = 57,656.88

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1.5x scale

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.