Home / 87,619.98-120,912.68-55,371.83

Finding the Fourth Proportional to 87,619.98, 120,912.68 and 55,371.83

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Solution

The fourth proportional to 87,619.98, 120,912.68 and 55,371.83 is: 76,411.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.98 : 120,912.68 = 55,371.83 : x
  2. Step 2: Convert to fraction form
    87,619.98/120,912.68 = 55,371.83/x
  3. Step 3: Cross multiply
    87,619.98x = 120,912.68 × 55,371.83
  4. Step 4: Simplify right side
    87,619.98x = 6,695,156,361.80
  5. Step 5: Solve for x
    x = 6,695,156,361.80/87,619.98
  6. Step 6: Final answer
    x = 76,411.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.