Home / 87,670.80-120,987-49,944.24

Finding the Fourth Proportional to 87,670.80, 120,987 and 49,944.24

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Solution

The fourth proportional to 87,670.80, 120,987 and 49,944.24 is: 68,923.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,670.80 : 120,987 = 49,944.24 : x
  2. Step 2: Convert to fraction form
    87,670.80/120,987 = 49,944.24/x
  3. Step 3: Cross multiply
    87,670.80x = 120,987 × 49,944.24
  4. Step 4: Simplify right side
    87,670.80x = 6,042,603,764.88
  5. Step 5: Solve for x
    x = 6,042,603,764.88/87,670.80
  6. Step 6: Final answer
    x = 68,923.79

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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.