Home / 87,478.43-120,703.30-49,232.88

Finding the Fourth Proportional to 87,478.43, 120,703.30 and 49,232.88

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Solution

The fourth proportional to 87,478.43, 120,703.30 and 49,232.88 is: 67,931.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,478.43 : 120,703.30 = 49,232.88 : x
  2. Step 2: Convert to fraction form
    87,478.43/120,703.30 = 49,232.88/x
  3. Step 3: Cross multiply
    87,478.43x = 120,703.30 × 49,232.88
  4. Step 4: Simplify right side
    87,478.43x = 5,942,570,961.42
  5. Step 5: Solve for x
    x = 5,942,570,961.42/87,478.43
  6. Step 6: Final answer
    x = 67,931.85

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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.