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Finding the Fourth Proportional to 72,429.87, 108,654.73 and 22,500.66

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Solution

The fourth proportional to 72,429.87, 108,654.73 and 22,500.66 is: 33,754.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,429.87 : 108,654.73 = 22,500.66 : x
  2. Step 2: Convert to fraction form
    72,429.87/108,654.73 = 22,500.66/x
  3. Step 3: Cross multiply
    72,429.87x = 108,654.73 × 22,500.66
  4. Step 4: Simplify right side
    72,429.87x = 2,444,803,080.87
  5. Step 5: Solve for x
    x = 2,444,803,080.87/72,429.87
  6. Step 6: Final answer
    x = 33,754.07

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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.