Home / 87,974.74-131,960.24-21,415.24

Finding the Fourth Proportional to 87,974.74, 131,960.24 and 21,415.24

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Solution

The fourth proportional to 87,974.74, 131,960.24 and 21,415.24 is: 32,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,974.74 : 131,960.24 = 21,415.24 : x
  2. Step 2: Convert to fraction form
    87,974.74/131,960.24 = 21,415.24/x
  3. Step 3: Cross multiply
    87,974.74x = 131,960.24 × 21,415.24
  4. Step 4: Simplify right side
    87,974.74x = 2,825,960,210.06
  5. Step 5: Solve for x
    x = 2,825,960,210.06/87,974.74
  6. Step 6: Final answer
    x = 32,122.40

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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.