Home / 87,717.80-131,490.30-43,351.40

Finding the Fourth Proportional to 87,717.80, 131,490.30 and 43,351.40

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Solution

The fourth proportional to 87,717.80, 131,490.30 and 43,351.40 is: 64,984.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,717.80 : 131,490.30 = 43,351.40 : x
  2. Step 2: Convert to fraction form
    87,717.80/131,490.30 = 43,351.40/x
  3. Step 3: Cross multiply
    87,717.80x = 131,490.30 × 43,351.40
  4. Step 4: Simplify right side
    87,717.80x = 5,700,288,591.42
  5. Step 5: Solve for x
    x = 5,700,288,591.42/87,717.80
  6. Step 6: Final answer
    x = 64,984.40

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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.