Home / 87,789.91-131,705.83-28,625.64

Finding the Fourth Proportional to 87,789.91, 131,705.83 and 28,625.64

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Solution

The fourth proportional to 87,789.91, 131,705.83 and 28,625.64 is: 42,945.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,789.91 : 131,705.83 = 28,625.64 : x
  2. Step 2: Convert to fraction form
    87,789.91/131,705.83 = 28,625.64/x
  3. Step 3: Cross multiply
    87,789.91x = 131,705.83 × 28,625.64
  4. Step 4: Simplify right side
    87,789.91x = 3,770,163,675.48
  5. Step 5: Solve for x
    x = 3,770,163,675.48/87,789.91
  6. Step 6: Final answer
    x = 42,945.30

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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.