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Finding the Fourth Proportional to 54,008.52, 81,013.42 and 18,949.16

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Solution

The fourth proportional to 54,008.52, 81,013.42 and 18,949.16 is: 28,423.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,008.52 : 81,013.42 = 18,949.16 : x
  2. Step 2: Convert to fraction form
    54,008.52/81,013.42 = 18,949.16/x
  3. Step 3: Cross multiply
    54,008.52x = 81,013.42 × 18,949.16
  4. Step 4: Simplify right side
    54,008.52x = 1,535,136,257.73
  5. Step 5: Solve for x
    x = 1,535,136,257.73/54,008.52
  6. Step 6: Final answer
    x = 28,423.96

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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.