Home / 87,851.87-131,776.63-21,292.57

Finding the Fourth Proportional to 87,851.87, 131,776.63 and 21,292.57

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Solution

The fourth proportional to 87,851.87, 131,776.63 and 21,292.57 is: 31,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,851.87 : 131,776.63 = 21,292.57 : x
  2. Step 2: Convert to fraction form
    87,851.87/131,776.63 = 21,292.57/x
  3. Step 3: Cross multiply
    87,851.87x = 131,776.63 × 21,292.57
  4. Step 4: Simplify right side
    87,851.87x = 2,805,863,118.64
  5. Step 5: Solve for x
    x = 2,805,863,118.64/87,851.87
  6. Step 6: Final answer
    x = 31,938.57

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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.