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Finding the Fourth Proportional to 55,620.53, 83,439.89 and 18,169.73

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Solution

The fourth proportional to 55,620.53, 83,439.89 and 18,169.73 is: 27,257.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,620.53 : 83,439.89 = 18,169.73 : x
  2. Step 2: Convert to fraction form
    55,620.53/83,439.89 = 18,169.73/x
  3. Step 3: Cross multiply
    55,620.53x = 83,439.89 × 18,169.73
  4. Step 4: Simplify right side
    55,620.53x = 1,516,079,764.48
  5. Step 5: Solve for x
    x = 1,516,079,764.48/55,620.53
  6. Step 6: Final answer
    x = 27,257.56

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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.