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Finding the Fourth Proportional to 71,568.32, 107,217.12 and 68,565.44

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Solution

The fourth proportional to 71,568.32, 107,217.12 and 68,565.44 is: 102,718.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,568.32 : 107,217.12 = 68,565.44 : x
  2. Step 2: Convert to fraction form
    71,568.32/107,217.12 = 68,565.44/x
  3. Step 3: Cross multiply
    71,568.32x = 107,217.12 × 68,565.44
  4. Step 4: Simplify right side
    71,568.32x = 7,351,389,008.33
  5. Step 5: Solve for x
    x = 7,351,389,008.33/71,568.32
  6. Step 6: Final answer
    x = 102,718.48

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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.