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Finding the Fourth Proportional to 80,758.66, 121,059.30 and 38,627.74

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Solution

The fourth proportional to 80,758.66, 121,059.30 and 38,627.74 is: 57,903.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,758.66 : 121,059.30 = 38,627.74 : x
  2. Step 2: Convert to fraction form
    80,758.66/121,059.30 = 38,627.74/x
  3. Step 3: Cross multiply
    80,758.66x = 121,059.30 × 38,627.74
  4. Step 4: Simplify right side
    80,758.66x = 4,676,247,164.98
  5. Step 5: Solve for x
    x = 4,676,247,164.98/80,758.66
  6. Step 6: Final answer
    x = 57,903.97

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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.