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Finding the Fourth Proportional to 68,275,712.80, 102,413,569.20 and 67,797,415.90

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Solution

The fourth proportional to 68,275,712.80, 102,413,569.20 and 67,797,415.90 is: 101,696,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,275,712.80 : 102,413,569.20 = 67,797,415.90 : x
  2. Step 2: Convert to fraction form
    68,275,712.80/102,413,569.20 = 67,797,415.90/x
  3. Step 3: Cross multiply
    68,275,712.80x = 102,413,569.20 × 67,797,415.90
  4. Step 4: Simplify right side
    68,275,712.80x = 6,943,375,344,855,831
  5. Step 5: Solve for x
    x = 6,943,375,344,855,831/68,275,712.80
  6. Step 6: Final answer
    x = 101,696,123.85

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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.