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Finding the Fourth Proportional to 54,951.80, 82,419.60 and 15,512.90

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Solution

The fourth proportional to 54,951.80, 82,419.60 and 15,512.90 is: 23,267.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,951.80 : 82,419.60 = 15,512.90 : x
  2. Step 2: Convert to fraction form
    54,951.80/82,419.60 = 15,512.90/x
  3. Step 3: Cross multiply
    54,951.80x = 82,419.60 × 15,512.90
  4. Step 4: Simplify right side
    54,951.80x = 1,278,567,012.84
  5. Step 5: Solve for x
    x = 1,278,567,012.84/54,951.80
  6. Step 6: Final answer
    x = 23,267.06

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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.