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Finding the Fourth Proportional to 73,517.60, 109,984.80 and 63,765.20

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Solution

The fourth proportional to 73,517.60, 109,984.80 and 63,765.20 is: 95,394.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,517.60 : 109,984.80 = 63,765.20 : x
  2. Step 2: Convert to fraction form
    73,517.60/109,984.80 = 63,765.20/x
  3. Step 3: Cross multiply
    73,517.60x = 109,984.80 × 63,765.20
  4. Step 4: Simplify right side
    73,517.60x = 7,013,202,768.96
  5. Step 5: Solve for x
    x = 7,013,202,768.96/73,517.60
  6. Step 6: Final answer
    x = 95,394.88

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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.