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Finding the Fourth Proportional to 80,436.88, 111,004.97 and 44,139.90

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Solution

The fourth proportional to 80,436.88, 111,004.97 and 44,139.90 is: 60,914.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,436.88 : 111,004.97 = 44,139.90 : x
  2. Step 2: Convert to fraction form
    80,436.88/111,004.97 = 44,139.90/x
  3. Step 3: Cross multiply
    80,436.88x = 111,004.97 × 44,139.90
  4. Step 4: Simplify right side
    80,436.88x = 4,899,748,470.87
  5. Step 5: Solve for x
    x = 4,899,748,470.87/80,436.88
  6. Step 6: Final answer
    x = 60,914.20

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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.