Home / 54,453.72-81,659.43-21,169.38

Finding the Fourth Proportional to 54,453.72, 81,659.43 and 21,169.38

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Solution

The fourth proportional to 54,453.72, 81,659.43 and 21,169.38 is: 31,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,453.72 : 81,659.43 = 21,169.38 : x
  2. Step 2: Convert to fraction form
    54,453.72/81,659.43 = 21,169.38/x
  3. Step 3: Cross multiply
    54,453.72x = 81,659.43 × 21,169.38
  4. Step 4: Simplify right side
    54,453.72x = 1,728,679,504.25
  5. Step 5: Solve for x
    x = 1,728,679,504.25/54,453.72
  6. Step 6: Final answer
    x = 31,745.85

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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.