Home / 87,320.20-131,037.90-31,916.20

Finding the Fourth Proportional to 87,320.20, 131,037.90 and 31,916.20

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Solution

The fourth proportional to 87,320.20, 131,037.90 and 31,916.20 is: 47,895.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,320.20 : 131,037.90 = 31,916.20 : x
  2. Step 2: Convert to fraction form
    87,320.20/131,037.90 = 31,916.20/x
  3. Step 3: Cross multiply
    87,320.20x = 131,037.90 × 31,916.20
  4. Step 4: Simplify right side
    87,320.20x = 4,182,231,823.98
  5. Step 5: Solve for x
    x = 4,182,231,823.98/87,320.20
  6. Step 6: Final answer
    x = 47,895.35

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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.