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Finding the Fourth Proportional to 87,221.75, 130,858.89 and 27,247.80

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Solution

The fourth proportional to 87,221.75, 130,858.89 and 27,247.80 is: 40,879.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,221.75 : 130,858.89 = 27,247.80 : x
  2. Step 2: Convert to fraction form
    87,221.75/130,858.89 = 27,247.80/x
  3. Step 3: Cross multiply
    87,221.75x = 130,858.89 × 27,247.80
  4. Step 4: Simplify right side
    87,221.75x = 3,565,616,208.65
  5. Step 5: Solve for x
    x = 3,565,616,208.65/87,221.75
  6. Step 6: Final answer
    x = 40,879.90

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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.