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Finding the Fourth Proportional to 80,960.96, 121,382.72 and 54,600.32

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Solution

The fourth proportional to 80,960.96, 121,382.72 and 54,600.32 is: 81,860.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,960.96 : 121,382.72 = 54,600.32 : x
  2. Step 2: Convert to fraction form
    80,960.96/121,382.72 = 54,600.32/x
  3. Step 3: Cross multiply
    80,960.96x = 121,382.72 × 54,600.32
  4. Step 4: Simplify right side
    80,960.96x = 6,627,535,354.47
  5. Step 5: Solve for x
    x = 6,627,535,354.47/80,960.96
  6. Step 6: Final answer
    x = 81,860.88

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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.