Home / 87,916.80-131,875.20-28,738.20

Finding the Fourth Proportional to 87,916.80, 131,875.20 and 28,738.20

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Solution

The fourth proportional to 87,916.80, 131,875.20 and 28,738.20 is: 43,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,916.80 : 131,875.20 = 28,738.20 : x
  2. Step 2: Convert to fraction form
    87,916.80/131,875.20 = 28,738.20/x
  3. Step 3: Cross multiply
    87,916.80x = 131,875.20 × 28,738.20
  4. Step 4: Simplify right side
    87,916.80x = 3,789,855,872.64
  5. Step 5: Solve for x
    x = 3,789,855,872.64/87,916.80
  6. Step 6: Final answer
    x = 43,107.30

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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.