Home / 82,481,512.80-123,428,336.40-71,815,951.20

Finding the Fourth Proportional to 82,481,512.80, 123,428,336.40 and 71,815,951.20

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Solution

The fourth proportional to 82,481,512.80, 123,428,336.40 and 71,815,951.20 is: 107,468,002.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,481,512.80 : 123,428,336.40 = 71,815,951.20 : x
  2. Step 2: Convert to fraction form
    82,481,512.80/123,428,336.40 = 71,815,951.20/x
  3. Step 3: Cross multiply
    82,481,512.80x = 123,428,336.40 × 71,815,951.20
  4. Step 4: Simplify right side
    82,481,512.80x = 8,864,123,383,599,584
  5. Step 5: Solve for x
    x = 8,864,123,383,599,584/82,481,512.80
  6. Step 6: Final answer
    x = 107,468,002.01

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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.