Home / 87,969.85-131,876.34-31,797.43

Finding the Fourth Proportional to 87,969.85, 131,876.34 and 31,797.43

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Solution

The fourth proportional to 87,969.85, 131,876.34 and 31,797.43 is: 47,667.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,969.85 : 131,876.34 = 31,797.43 : x
  2. Step 2: Convert to fraction form
    87,969.85/131,876.34 = 31,797.43/x
  3. Step 3: Cross multiply
    87,969.85x = 131,876.34 × 31,797.43
  4. Step 4: Simplify right side
    87,969.85x = 4,193,328,689.81
  5. Step 5: Solve for x
    x = 4,193,328,689.81/87,969.85
  6. Step 6: Final answer
    x = 47,667.79

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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.