Home / 80,425.32-120,637.98-55,099.86

Finding the Fourth Proportional to 80,425.32, 120,637.98 and 55,099.86

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Solution

The fourth proportional to 80,425.32, 120,637.98 and 55,099.86 is: 82,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,425.32 : 120,637.98 = 55,099.86 : x
  2. Step 2: Convert to fraction form
    80,425.32/120,637.98 = 55,099.86/x
  3. Step 3: Cross multiply
    80,425.32x = 120,637.98 × 55,099.86
  4. Step 4: Simplify right side
    80,425.32x = 6,647,135,808.68
  5. Step 5: Solve for x
    x = 6,647,135,808.68/80,425.32
  6. Step 6: Final answer
    x = 82,649.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.