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Finding the Fourth Proportional to 71,487.78, 107,161.94 and 34,037.79

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Solution

The fourth proportional to 71,487.78, 107,161.94 and 34,037.79 is: 51,023.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,487.78 : 107,161.94 = 34,037.79 : x
  2. Step 2: Convert to fraction form
    71,487.78/107,161.94 = 34,037.79/x
  3. Step 3: Cross multiply
    71,487.78x = 107,161.94 × 34,037.79
  4. Step 4: Simplify right side
    71,487.78x = 3,647,555,792.52
  5. Step 5: Solve for x
    x = 3,647,555,792.52/71,487.78
  6. Step 6: Final answer
    x = 51,023.48

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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.