Home / 87,415.78-131,104.22-34,109.16

Finding the Fourth Proportional to 87,415.78, 131,104.22 and 34,109.16

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Solution

The fourth proportional to 87,415.78, 131,104.22 and 34,109.16 is: 51,156.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,415.78 : 131,104.22 = 34,109.16 : x
  2. Step 2: Convert to fraction form
    87,415.78/131,104.22 = 34,109.16/x
  3. Step 3: Cross multiply
    87,415.78x = 131,104.22 × 34,109.16
  4. Step 4: Simplify right side
    87,415.78x = 4,471,854,816.66
  5. Step 5: Solve for x
    x = 4,471,854,816.66/87,415.78
  6. Step 6: Final answer
    x = 51,156.15

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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.