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Finding the Fourth Proportional to 71,074.20, 106,610.79 and 28,944.39

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Solution

The fourth proportional to 71,074.20, 106,610.79 and 28,944.39 is: 43,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,074.20 : 106,610.79 = 28,944.39 : x
  2. Step 2: Convert to fraction form
    71,074.20/106,610.79 = 28,944.39/x
  3. Step 3: Cross multiply
    71,074.20x = 106,610.79 × 28,944.39
  4. Step 4: Simplify right side
    71,074.20x = 3,085,784,283.97
  5. Step 5: Solve for x
    x = 3,085,784,283.97/71,074.20
  6. Step 6: Final answer
    x = 43,416.38

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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.