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Finding the Fourth Proportional to 80,287.40, 110,791.90 and 43,981.65

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Solution

The fourth proportional to 80,287.40, 110,791.90 and 43,981.65 is: 60,692.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,287.40 : 110,791.90 = 43,981.65 : x
  2. Step 2: Convert to fraction form
    80,287.40/110,791.90 = 43,981.65/x
  3. Step 3: Cross multiply
    80,287.40x = 110,791.90 × 43,981.65
  4. Step 4: Simplify right side
    80,287.40x = 4,872,810,623.61
  5. Step 5: Solve for x
    x = 4,872,810,623.61/80,287.40
  6. Step 6: Final answer
    x = 60,692.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.