Home / 87,286.86-120,450.51-51,478.38

Finding the Fourth Proportional to 87,286.86, 120,450.51 and 51,478.38

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Solution

The fourth proportional to 87,286.86, 120,450.51 and 51,478.38 is: 71,037.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,286.86 : 120,450.51 = 51,478.38 : x
  2. Step 2: Convert to fraction form
    87,286.86/120,450.51 = 51,478.38/x
  3. Step 3: Cross multiply
    87,286.86x = 120,450.51 × 51,478.38
  4. Step 4: Simplify right side
    87,286.86x = 6,200,597,124.97
  5. Step 5: Solve for x
    x = 6,200,597,124.97/87,286.86
  6. Step 6: Final answer
    x = 71,037.01

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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.