Home / 87,909.36-131,862.72-21,350

Finding the Fourth Proportional to 87,909.36, 131,862.72 and 21,350

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Solution

The fourth proportional to 87,909.36, 131,862.72 and 21,350 is: 32,024.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.36 : 131,862.72 = 21,350 : x
  2. Step 2: Convert to fraction form
    87,909.36/131,862.72 = 21,350/x
  3. Step 3: Cross multiply
    87,909.36x = 131,862.72 × 21,350
  4. Step 4: Simplify right side
    87,909.36x = 2,815,269,072
  5. Step 5: Solve for x
    x = 2,815,269,072/87,909.36
  6. Step 6: Final answer
    x = 32,024.68

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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.