Home / 87,119.10-120,222.78-48,879.36

Finding the Fourth Proportional to 87,119.10, 120,222.78 and 48,879.36

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Solution

The fourth proportional to 87,119.10, 120,222.78 and 48,879.36 is: 67,452.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,119.10 : 120,222.78 = 48,879.36 : x
  2. Step 2: Convert to fraction form
    87,119.10/120,222.78 = 48,879.36/x
  3. Step 3: Cross multiply
    87,119.10x = 120,222.78 × 48,879.36
  4. Step 4: Simplify right side
    87,119.10x = 5,876,412,543.82
  5. Step 5: Solve for x
    x = 5,876,412,543.82/87,119.10
  6. Step 6: Final answer
    x = 67,452.63

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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.