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Finding the Fourth Proportional to 80,951.82, 121,354.22 and 28,332.60

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Solution

The fourth proportional to 80,951.82, 121,354.22 and 28,332.60 is: 42,473.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,951.82 : 121,354.22 = 28,332.60 : x
  2. Step 2: Convert to fraction form
    80,951.82/121,354.22 = 28,332.60/x
  3. Step 3: Cross multiply
    80,951.82x = 121,354.22 × 28,332.60
  4. Step 4: Simplify right side
    80,951.82x = 3,438,280,573.57
  5. Step 5: Solve for x
    x = 3,438,280,573.57/80,951.82
  6. Step 6: Final answer
    x = 42,473.17

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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.