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Finding the Fourth Proportional to 80,470.56, 120,627.54 and 38,339.40

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Solution

The fourth proportional to 80,470.56, 120,627.54 and 38,339.40 is: 57,471.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,470.56 : 120,627.54 = 38,339.40 : x
  2. Step 2: Convert to fraction form
    80,470.56/120,627.54 = 38,339.40/x
  3. Step 3: Cross multiply
    80,470.56x = 120,627.54 × 38,339.40
  4. Step 4: Simplify right side
    80,470.56x = 4,624,787,507.08
  5. Step 5: Solve for x
    x = 4,624,787,507.08/80,470.56
  6. Step 6: Final answer
    x = 57,471.79

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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.