Home / 87,890.10-131,786.55-28,695.30

Finding the Fourth Proportional to 87,890.10, 131,786.55 and 28,695.30

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Solution

The fourth proportional to 87,890.10, 131,786.55 and 28,695.30 is: 43,027.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.10 : 131,786.55 = 28,695.30 : x
  2. Step 2: Convert to fraction form
    87,890.10/131,786.55 = 28,695.30/x
  3. Step 3: Cross multiply
    87,890.10x = 131,786.55 × 28,695.30
  4. Step 4: Simplify right side
    87,890.10x = 3,781,654,588.22
  5. Step 5: Solve for x
    x = 3,781,654,588.22/87,890.10
  6. Step 6: Final answer
    x = 43,027.08

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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.