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Finding the Fourth Proportional to 57,269.60, 85,969.20 and 33,909.20

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Solution

The fourth proportional to 57,269.60, 85,969.20 and 33,909.20 is: 50,902.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,269.60 : 85,969.20 = 33,909.20 : x
  2. Step 2: Convert to fraction form
    57,269.60/85,969.20 = 33,909.20/x
  3. Step 3: Cross multiply
    57,269.60x = 85,969.20 × 33,909.20
  4. Step 4: Simplify right side
    57,269.60x = 2,915,146,796.64
  5. Step 5: Solve for x
    x = 2,915,146,796.64/57,269.60
  6. Step 6: Final answer
    x = 50,902.17

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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.