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Finding the Fourth Proportional to 80,394.48, 120,603.24 and 27,791.64

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Solution

The fourth proportional to 80,394.48, 120,603.24 and 27,791.64 is: 41,691.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,394.48 : 120,603.24 = 27,791.64 : x
  2. Step 2: Convert to fraction form
    80,394.48/120,603.24 = 27,791.64/x
  3. Step 3: Cross multiply
    80,394.48x = 120,603.24 × 27,791.64
  4. Step 4: Simplify right side
    80,394.48x = 3,351,761,828.91
  5. Step 5: Solve for x
    x = 3,351,761,828.91/80,394.48
  6. Step 6: Final answer
    x = 41,691.44

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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.