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Finding the Fourth Proportional to 57,179.60, 85,769.40 and 38,468.60

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Solution

The fourth proportional to 57,179.60, 85,769.40 and 38,468.60 is: 57,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,179.60 : 85,769.40 = 38,468.60 : x
  2. Step 2: Convert to fraction form
    57,179.60/85,769.40 = 38,468.60/x
  3. Step 3: Cross multiply
    57,179.60x = 85,769.40 × 38,468.60
  4. Step 4: Simplify right side
    57,179.60x = 3,299,428,740.84
  5. Step 5: Solve for x
    x = 3,299,428,740.84/57,179.60
  6. Step 6: Final answer
    x = 57,702.90

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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.