Home / 87,717.43-121,049.97-47,431.10

Finding the Fourth Proportional to 87,717.43, 121,049.97 and 47,431.10

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Solution

The fourth proportional to 87,717.43, 121,049.97 and 47,431.10 is: 65,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,717.43 : 121,049.97 = 47,431.10 : x
  2. Step 2: Convert to fraction form
    87,717.43/121,049.97 = 47,431.10/x
  3. Step 3: Cross multiply
    87,717.43x = 121,049.97 × 47,431.10
  4. Step 4: Simplify right side
    87,717.43x = 5,741,532,774.88
  5. Step 5: Solve for x
    x = 5,741,532,774.88/87,717.43
  6. Step 6: Final answer
    x = 65,454.87

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1.5x scale

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.