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Finding the Fourth Proportional to 86,375.68, 129,632.64 and 44,834.56

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Solution

The fourth proportional to 86,375.68, 129,632.64 and 44,834.56 is: 67,287.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,375.68 : 129,632.64 = 44,834.56 : x
  2. Step 2: Convert to fraction form
    86,375.68/129,632.64 = 44,834.56/x
  3. Step 3: Cross multiply
    86,375.68x = 129,632.64 × 44,834.56
  4. Step 4: Simplify right side
    86,375.68x = 5,812,022,376.04
  5. Step 5: Solve for x
    x = 5,812,022,376.04/86,375.68
  6. Step 6: Final answer
    x = 67,287.72

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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.