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Finding the Fourth Proportional to 80,687.67, 111,345.46 and 44,386.81

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Solution

The fourth proportional to 80,687.67, 111,345.46 and 44,386.81 is: 61,251.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,687.67 : 111,345.46 = 44,386.81 : x
  2. Step 2: Convert to fraction form
    80,687.67/111,345.46 = 44,386.81/x
  3. Step 3: Cross multiply
    80,687.67x = 111,345.46 × 44,386.81
  4. Step 4: Simplify right side
    80,687.67x = 4,942,269,388.05
  5. Step 5: Solve for x
    x = 4,942,269,388.05/80,687.67
  6. Step 6: Final answer
    x = 61,251.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.