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Finding the Fourth Proportional to 73,934.70, 110,902.05 and 21,345.90

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Solution

The fourth proportional to 73,934.70, 110,902.05 and 21,345.90 is: 32,018.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,934.70 : 110,902.05 = 21,345.90 : x
  2. Step 2: Convert to fraction form
    73,934.70/110,902.05 = 21,345.90/x
  3. Step 3: Cross multiply
    73,934.70x = 110,902.05 × 21,345.90
  4. Step 4: Simplify right side
    73,934.70x = 2,367,304,069.10
  5. Step 5: Solve for x
    x = 2,367,304,069.10/73,934.70
  6. Step 6: Final answer
    x = 32,018.85

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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.