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Finding the Fourth Proportional to 80,403.38, 110,976.86 and 54,605.59

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Solution

The fourth proportional to 80,403.38, 110,976.86 and 54,605.59 is: 75,369.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,403.38 : 110,976.86 = 54,605.59 : x
  2. Step 2: Convert to fraction form
    80,403.38/110,976.86 = 54,605.59/x
  3. Step 3: Cross multiply
    80,403.38x = 110,976.86 × 54,605.59
  4. Step 4: Simplify right side
    80,403.38x = 6,059,957,073.61
  5. Step 5: Solve for x
    x = 6,059,957,073.61/80,403.38
  6. Step 6: Final answer
    x = 75,369.43

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1.5x scale

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.