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Finding the Fourth Proportional to 54,078.70, 80,958.29 and 39,944.88

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Solution

The fourth proportional to 54,078.70, 80,958.29 and 39,944.88 is: 59,799.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,078.70 : 80,958.29 = 39,944.88 : x
  2. Step 2: Convert to fraction form
    54,078.70/80,958.29 = 39,944.88/x
  3. Step 3: Cross multiply
    54,078.70x = 80,958.29 × 39,944.88
  4. Step 4: Simplify right side
    54,078.70x = 3,233,869,179.06
  5. Step 5: Solve for x
    x = 3,233,869,179.06/54,078.70
  6. Step 6: Final answer
    x = 59,799.31

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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.