Home / 87,993.47-131,958-31,820.10

Finding the Fourth Proportional to 87,993.47, 131,958 and 31,820.10

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Solution

The fourth proportional to 87,993.47, 131,958 and 31,820.10 is: 47,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,993.47 : 131,958 = 31,820.10 : x
  2. Step 2: Convert to fraction form
    87,993.47/131,958 = 31,820.10/x
  3. Step 3: Cross multiply
    87,993.47x = 131,958 × 31,820.10
  4. Step 4: Simplify right side
    87,993.47x = 4,198,916,755.80
  5. Step 5: Solve for x
    x = 4,198,916,755.80/87,993.47
  6. Step 6: Final answer
    x = 47,718.51

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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.