Home / 87,869.19-131,773.72-28,690.19

Finding the Fourth Proportional to 87,869.19, 131,773.72 and 28,690.19

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Solution

The fourth proportional to 87,869.19, 131,773.72 and 28,690.19 is: 43,025.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,869.19 : 131,773.72 = 28,690.19 : x
  2. Step 2: Convert to fraction form
    87,869.19/131,773.72 = 28,690.19/x
  3. Step 3: Cross multiply
    87,869.19x = 131,773.72 × 28,690.19
  4. Step 4: Simplify right side
    87,869.19x = 3,780,613,063.81
  5. Step 5: Solve for x
    x = 3,780,613,063.81/87,869.19
  6. Step 6: Final answer
    x = 43,025.47

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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.