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Finding the Fourth Proportional to 72,473.20, 108,709.80 and 60,007.30

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Solution

The fourth proportional to 72,473.20, 108,709.80 and 60,007.30 is: 90,010.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,473.20 : 108,709.80 = 60,007.30 : x
  2. Step 2: Convert to fraction form
    72,473.20/108,709.80 = 60,007.30/x
  3. Step 3: Cross multiply
    72,473.20x = 108,709.80 × 60,007.30
  4. Step 4: Simplify right side
    72,473.20x = 6,523,381,581.54
  5. Step 5: Solve for x
    x = 6,523,381,581.54/72,473.20
  6. Step 6: Final answer
    x = 90,010.95

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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.