Home / 80,259.15-120,322.98-30,310.86

Finding the Fourth Proportional to 80,259.15, 120,322.98 and 30,310.86

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Solution

The fourth proportional to 80,259.15, 120,322.98 and 30,310.86 is: 45,441.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,259.15 : 120,322.98 = 30,310.86 : x
  2. Step 2: Convert to fraction form
    80,259.15/120,322.98 = 30,310.86/x
  3. Step 3: Cross multiply
    80,259.15x = 120,322.98 × 30,310.86
  4. Step 4: Simplify right side
    80,259.15x = 3,647,093,001.56
  5. Step 5: Solve for x
    x = 3,647,093,001.56/80,259.15
  6. Step 6: Final answer
    x = 45,441.46

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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.