Home / 87,422.18-120,642.45-49,181.77

Finding the Fourth Proportional to 87,422.18, 120,642.45 and 49,181.77

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Solution

The fourth proportional to 87,422.18, 120,642.45 and 49,181.77 is: 67,870.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,422.18 : 120,642.45 = 49,181.77 : x
  2. Step 2: Convert to fraction form
    87,422.18/120,642.45 = 49,181.77/x
  3. Step 3: Cross multiply
    87,422.18x = 120,642.45 × 49,181.77
  4. Step 4: Simplify right side
    87,422.18x = 5,933,408,624.92
  5. Step 5: Solve for x
    x = 5,933,408,624.92/87,422.18
  6. Step 6: Final answer
    x = 67,870.75

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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.