Home / 87,310.80-120,489.39-51,014.38

Finding the Fourth Proportional to 87,310.80, 120,489.39 and 51,014.38

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Solution

The fourth proportional to 87,310.80, 120,489.39 and 51,014.38 is: 70,400.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,310.80 : 120,489.39 = 51,014.38 : x
  2. Step 2: Convert to fraction form
    87,310.80/120,489.39 = 51,014.38/x
  3. Step 3: Cross multiply
    87,310.80x = 120,489.39 × 51,014.38
  4. Step 4: Simplify right side
    87,310.80x = 6,146,691,527.43
  5. Step 5: Solve for x
    x = 6,146,691,527.43/87,310.80
  6. Step 6: Final answer
    x = 70,400.13

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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.