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Finding the Fourth Proportional to 80,758.68, 121,179.71 and 38,630.22

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Solution

The fourth proportional to 80,758.68, 121,179.71 and 38,630.22 is: 57,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,758.68 : 121,179.71 = 38,630.22 : x
  2. Step 2: Convert to fraction form
    80,758.68/121,179.71 = 38,630.22/x
  3. Step 3: Cross multiply
    80,758.68x = 121,179.71 × 38,630.22
  4. Step 4: Simplify right side
    80,758.68x = 4,681,198,980.63
  5. Step 5: Solve for x
    x = 4,681,198,980.63/80,758.68
  6. Step 6: Final answer
    x = 57,965.28

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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.