Home / 87,126.71-120,216.49-56,956.43

Finding the Fourth Proportional to 87,126.71, 120,216.49 and 56,956.43

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Solution

The fourth proportional to 87,126.71, 120,216.49 and 56,956.43 is: 78,587.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,126.71 : 120,216.49 = 56,956.43 : x
  2. Step 2: Convert to fraction form
    87,126.71/120,216.49 = 56,956.43/x
  3. Step 3: Cross multiply
    87,126.71x = 120,216.49 × 56,956.43
  4. Step 4: Simplify right side
    87,126.71x = 6,847,102,255.68
  5. Step 5: Solve for x
    x = 6,847,102,255.68/87,126.71
  6. Step 6: Final answer
    x = 78,587.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.