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Finding the Fourth Proportional to 45,666, 68,519.52 and 29,021.72

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Solution

The fourth proportional to 45,666, 68,519.52 and 29,021.72 is: 43,545.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,666 : 68,519.52 = 29,021.72 : x
  2. Step 2: Convert to fraction form
    45,666/68,519.52 = 29,021.72/x
  3. Step 3: Cross multiply
    45,666x = 68,519.52 × 29,021.72
  4. Step 4: Simplify right side
    45,666x = 1,988,553,981.38
  5. Step 5: Solve for x
    x = 1,988,553,981.38/45,666
  6. Step 6: Final answer
    x = 43,545.61

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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.