Home / 81,192,711.70-121,789,067.55-63,974,023.30

Finding the Fourth Proportional to 81,192,711.70, 121,789,067.55 and 63,974,023.30

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Solution

The fourth proportional to 81,192,711.70, 121,789,067.55 and 63,974,023.30 is: 95,961,034.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,711.70 : 121,789,067.55 = 63,974,023.30 : x
  2. Step 2: Convert to fraction form
    81,192,711.70/121,789,067.55 = 63,974,023.30/x
  3. Step 3: Cross multiply
    81,192,711.70x = 121,789,067.55 × 63,974,023.30
  4. Step 4: Simplify right side
    81,192,711.70x = 7,791,336,645,128,973
  5. Step 5: Solve for x
    x = 7,791,336,645,128,973/81,192,711.70
  6. Step 6: Final answer
    x = 95,961,034.95

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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.