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Finding the Fourth Proportional to 80,844.87, 111,476.19 and 66,264.87

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Solution

The fourth proportional to 80,844.87, 111,476.19 and 66,264.87 is: 91,371.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,844.87 : 111,476.19 = 66,264.87 : x
  2. Step 2: Convert to fraction form
    80,844.87/111,476.19 = 66,264.87/x
  3. Step 3: Cross multiply
    80,844.87x = 111,476.19 × 66,264.87
  4. Step 4: Simplify right side
    80,844.87x = 7,386,955,238.45
  5. Step 5: Solve for x
    x = 7,386,955,238.45/80,844.87
  6. Step 6: Final answer
    x = 91,371.97

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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.