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Finding the Fourth Proportional to 71,374.52, 107,053.50 and 18,788.11

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Solution

The fourth proportional to 71,374.52, 107,053.50 and 18,788.11 is: 28,179.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,374.52 : 107,053.50 = 18,788.11 : x
  2. Step 2: Convert to fraction form
    71,374.52/107,053.50 = 18,788.11/x
  3. Step 3: Cross multiply
    71,374.52x = 107,053.50 × 18,788.11
  4. Step 4: Simplify right side
    71,374.52x = 2,011,332,736.71
  5. Step 5: Solve for x
    x = 2,011,332,736.71/71,374.52
  6. Step 6: Final answer
    x = 28,179.98

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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.