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Finding the Fourth Proportional to 80,676.31, 111,329.79 and 44,869.66

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Solution

The fourth proportional to 80,676.31, 111,329.79 and 44,869.66 is: 61,918.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,676.31 : 111,329.79 = 44,869.66 : x
  2. Step 2: Convert to fraction form
    80,676.31/111,329.79 = 44,869.66/x
  3. Step 3: Cross multiply
    80,676.31x = 111,329.79 × 44,869.66
  4. Step 4: Simplify right side
    80,676.31x = 4,995,329,825.17
  5. Step 5: Solve for x
    x = 4,995,329,825.17/80,676.31
  6. Step 6: Final answer
    x = 61,918.17

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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.