Home / 87,858.30-131,786.26-21,299

Finding the Fourth Proportional to 87,858.30, 131,786.26 and 21,299

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Solution

The fourth proportional to 87,858.30, 131,786.26 and 21,299 is: 31,948.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,858.30 : 131,786.26 = 21,299 : x
  2. Step 2: Convert to fraction form
    87,858.30/131,786.26 = 21,299/x
  3. Step 3: Cross multiply
    87,858.30x = 131,786.26 × 21,299
  4. Step 4: Simplify right side
    87,858.30x = 2,806,915,551.74
  5. Step 5: Solve for x
    x = 2,806,915,551.74/87,858.30
  6. Step 6: Final answer
    x = 31,948.21

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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.