Home / 54,474.97-81,691.39-21,190.54

Finding the Fourth Proportional to 54,474.97, 81,691.39 and 21,190.54

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Solution

The fourth proportional to 54,474.97, 81,691.39 and 21,190.54 is: 31,777.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,474.97 : 81,691.39 = 21,190.54 : x
  2. Step 2: Convert to fraction form
    54,474.97/81,691.39 = 21,190.54/x
  3. Step 3: Cross multiply
    54,474.97x = 81,691.39 × 21,190.54
  4. Step 4: Simplify right side
    54,474.97x = 1,731,084,667.45
  5. Step 5: Solve for x
    x = 1,731,084,667.45/54,474.97
  6. Step 6: Final answer
    x = 31,777.62

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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.