Home / 87,679.77-131,612.65-71,238.34

Finding the Fourth Proportional to 87,679.77, 131,612.65 and 71,238.34

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Solution

The fourth proportional to 87,679.77, 131,612.65 and 71,238.34 is: 106,933.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,679.77 : 131,612.65 = 71,238.34 : x
  2. Step 2: Convert to fraction form
    87,679.77/131,612.65 = 71,238.34/x
  3. Step 3: Cross multiply
    87,679.77x = 131,612.65 × 71,238.34
  4. Step 4: Simplify right side
    87,679.77x = 9,375,865,955.10
  5. Step 5: Solve for x
    x = 9,375,865,955.10/87,679.77
  6. Step 6: Final answer
    x = 106,933.06

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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.