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Finding the Fourth Proportional to 71,677.34, 107,517.90 and 19,086.92

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Solution

The fourth proportional to 71,677.34, 107,517.90 and 19,086.92 is: 28,630.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,677.34 : 107,517.90 = 19,086.92 : x
  2. Step 2: Convert to fraction form
    71,677.34/107,517.90 = 19,086.92/x
  3. Step 3: Cross multiply
    71,677.34x = 107,517.90 × 19,086.92
  4. Step 4: Simplify right side
    71,677.34x = 2,052,185,555.87
  5. Step 5: Solve for x
    x = 2,052,185,555.87/71,677.34
  6. Step 6: Final answer
    x = 28,630.88

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1.5x scale

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.