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Finding the Fourth Proportional to 29,145.78, 43,719.47 and 11,375.73

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Solution

The fourth proportional to 29,145.78, 43,719.47 and 11,375.73 is: 17,063.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,145.78 : 43,719.47 = 11,375.73 : x
  2. Step 2: Convert to fraction form
    29,145.78/43,719.47 = 11,375.73/x
  3. Step 3: Cross multiply
    29,145.78x = 43,719.47 × 11,375.73
  4. Step 4: Simplify right side
    29,145.78x = 497,340,829.58
  5. Step 5: Solve for x
    x = 497,340,829.58/29,145.78
  6. Step 6: Final answer
    x = 17,063.91

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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.