Home / 80,289.18-120,367.98-30,340.86

Finding the Fourth Proportional to 80,289.18, 120,367.98 and 30,340.86

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Solution

The fourth proportional to 80,289.18, 120,367.98 and 30,340.86 is: 45,486.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,289.18 : 120,367.98 = 30,340.86 : x
  2. Step 2: Convert to fraction form
    80,289.18/120,367.98 = 30,340.86/x
  3. Step 3: Cross multiply
    80,289.18x = 120,367.98 × 30,340.86
  4. Step 4: Simplify right side
    80,289.18x = 3,652,068,029.66
  5. Step 5: Solve for x
    x = 3,652,068,029.66/80,289.18
  6. Step 6: Final answer
    x = 45,486.43

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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.