Home / 87,877.68-131,837.40-28,713.30

Finding the Fourth Proportional to 87,877.68, 131,837.40 and 28,713.30

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Solution

The fourth proportional to 87,877.68, 131,837.40 and 28,713.30 is: 43,076.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,877.68 : 131,837.40 = 28,713.30 : x
  2. Step 2: Convert to fraction form
    87,877.68/131,837.40 = 28,713.30/x
  3. Step 3: Cross multiply
    87,877.68x = 131,837.40 × 28,713.30
  4. Step 4: Simplify right side
    87,877.68x = 3,785,486,817.42
  5. Step 5: Solve for x
    x = 3,785,486,817.42/87,877.68
  6. Step 6: Final answer
    x = 43,076.77

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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.