Home / 87,019.15-120,093.77-48,778.09

Finding the Fourth Proportional to 87,019.15, 120,093.77 and 48,778.09

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Solution

The fourth proportional to 87,019.15, 120,093.77 and 48,778.09 is: 67,317.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,019.15 : 120,093.77 = 48,778.09 : x
  2. Step 2: Convert to fraction form
    87,019.15/120,093.77 = 48,778.09/x
  3. Step 3: Cross multiply
    87,019.15x = 120,093.77 × 48,778.09
  4. Step 4: Simplify right side
    87,019.15x = 5,857,944,055.96
  5. Step 5: Solve for x
    x = 5,857,944,055.96/87,019.15
  6. Step 6: Final answer
    x = 67,317.87

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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.