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Finding the Fourth Proportional to 80,868, 121,167.87 and 49,182.21

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Solution

The fourth proportional to 80,868, 121,167.87 and 49,182.21 is: 73,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,868 : 121,167.87 = 49,182.21 : x
  2. Step 2: Convert to fraction form
    80,868/121,167.87 = 49,182.21/x
  3. Step 3: Cross multiply
    80,868x = 121,167.87 × 49,182.21
  4. Step 4: Simplify right side
    80,868x = 5,959,303,627.59
  5. Step 5: Solve for x
    x = 5,959,303,627.59/80,868
  6. Step 6: Final answer
    x = 73,691.74

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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.