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Finding the Fourth Proportional to 54,017.82, 81,034.82 and 18,951.30

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Solution

The fourth proportional to 54,017.82, 81,034.82 and 18,951.30 is: 28,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,017.82 : 81,034.82 = 18,951.30 : x
  2. Step 2: Convert to fraction form
    54,017.82/81,034.82 = 18,951.30/x
  3. Step 3: Cross multiply
    54,017.82x = 81,034.82 × 18,951.30
  4. Step 4: Simplify right side
    54,017.82x = 1,535,715,184.27
  5. Step 5: Solve for x
    x = 1,535,715,184.27/54,017.82
  6. Step 6: Final answer
    x = 28,429.79

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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.