Home / 87,959.11-131,938.75-21,399.23

Finding the Fourth Proportional to 87,959.11, 131,938.75 and 21,399.23

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Solution

The fourth proportional to 87,959.11, 131,938.75 and 21,399.23 is: 32,098.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,959.11 : 131,938.75 = 21,399.23 : x
  2. Step 2: Convert to fraction form
    87,959.11/131,938.75 = 21,399.23/x
  3. Step 3: Cross multiply
    87,959.11x = 131,938.75 × 21,399.23
  4. Step 4: Simplify right side
    87,959.11x = 2,823,388,040.51
  5. Step 5: Solve for x
    x = 2,823,388,040.51/87,959.11
  6. Step 6: Final answer
    x = 32,098.87

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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.