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Finding the Fourth Proportional to 80,274.53, 120,489.56 and 38,750.69

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Solution

The fourth proportional to 80,274.53, 120,489.56 and 38,750.69 is: 58,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,274.53 : 120,489.56 = 38,750.69 : x
  2. Step 2: Convert to fraction form
    80,274.53/120,489.56 = 38,750.69/x
  3. Step 3: Cross multiply
    80,274.53x = 120,489.56 × 38,750.69
  4. Step 4: Simplify right side
    80,274.53x = 4,669,053,587.80
  5. Step 5: Solve for x
    x = 4,669,053,587.80/80,274.53
  6. Step 6: Final answer
    x = 58,163.57

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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.