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Finding the Fourth Proportional to 81,363.62, 122,046.08 and 28,773.09

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Solution

The fourth proportional to 81,363.62, 122,046.08 and 28,773.09 is: 43,159.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,363.62 : 122,046.08 = 28,773.09 : x
  2. Step 2: Convert to fraction form
    81,363.62/122,046.08 = 28,773.09/x
  3. Step 3: Cross multiply
    81,363.62x = 122,046.08 × 28,773.09
  4. Step 4: Simplify right side
    81,363.62x = 3,511,642,700.12
  5. Step 5: Solve for x
    x = 3,511,642,700.12/81,363.62
  6. Step 6: Final answer
    x = 43,159.86

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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.