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Finding the Fourth Proportional to 68,639,013.82, 102,957,869.85 and 17,520,327.10

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Solution

The fourth proportional to 68,639,013.82, 102,957,869.85 and 17,520,327.10 is: 26,280,324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,639,013.82 : 102,957,869.85 = 17,520,327.10 : x
  2. Step 2: Convert to fraction form
    68,639,013.82/102,957,869.85 = 17,520,327.10/x
  3. Step 3: Cross multiply
    68,639,013.82x = 102,957,869.85 × 17,520,327.10
  4. Step 4: Simplify right side
    68,639,013.82x = 1,803,855,557,291,228
  5. Step 5: Solve for x
    x = 1,803,855,557,291,228/68,639,013.82
  6. Step 6: Final answer
    x = 26,280,324.51

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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.