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Finding the Fourth Proportional to 54,027.81, 81,049.82 and 18,961.29

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Solution

The fourth proportional to 54,027.81, 81,049.82 and 18,961.29 is: 28,444.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,027.81 : 81,049.82 = 18,961.29 : x
  2. Step 2: Convert to fraction form
    54,027.81/81,049.82 = 18,961.29/x
  3. Step 3: Cross multiply
    54,027.81x = 81,049.82 × 18,961.29
  4. Step 4: Simplify right side
    54,027.81x = 1,536,809,046.66
  5. Step 5: Solve for x
    x = 1,536,809,046.66/54,027.81
  6. Step 6: Final answer
    x = 28,444.78

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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.