Home / 87,633.80-131,450.70-54,456.20

Finding the Fourth Proportional to 87,633.80, 131,450.70 and 54,456.20

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Solution

The fourth proportional to 87,633.80, 131,450.70 and 54,456.20 is: 81,684.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,633.80 : 131,450.70 = 54,456.20 : x
  2. Step 2: Convert to fraction form
    87,633.80/131,450.70 = 54,456.20/x
  3. Step 3: Cross multiply
    87,633.80x = 131,450.70 × 54,456.20
  4. Step 4: Simplify right side
    87,633.80x = 7,158,305,609.34
  5. Step 5: Solve for x
    x = 7,158,305,609.34/87,633.80
  6. Step 6: Final answer
    x = 81,684.30

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1.5x scale

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.