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Finding the Fourth Proportional to 71,567.28, 107,320.90 and 27,169.56

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Solution

The fourth proportional to 71,567.28, 107,320.90 and 27,169.56 is: 40,742.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,567.28 : 107,320.90 = 27,169.56 : x
  2. Step 2: Convert to fraction form
    71,567.28/107,320.90 = 27,169.56/x
  3. Step 3: Cross multiply
    71,567.28x = 107,320.90 × 27,169.56
  4. Step 4: Simplify right side
    71,567.28x = 2,915,861,631.80
  5. Step 5: Solve for x
    x = 2,915,861,631.80/71,567.28
  6. Step 6: Final answer
    x = 40,742.94

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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.