Home / 87,870.62-131,778.67-31,703.43

Finding the Fourth Proportional to 87,870.62, 131,778.67 and 31,703.43

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Solution

The fourth proportional to 87,870.62, 131,778.67 and 31,703.43 is: 47,545.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,870.62 : 131,778.67 = 31,703.43 : x
  2. Step 2: Convert to fraction form
    87,870.62/131,778.67 = 31,703.43/x
  3. Step 3: Cross multiply
    87,870.62x = 131,778.67 × 31,703.43
  4. Step 4: Simplify right side
    87,870.62x = 4,177,835,839.84
  5. Step 5: Solve for x
    x = 4,177,835,839.84/87,870.62
  6. Step 6: Final answer
    x = 47,545.31

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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.