Home / 80,280.18-120,354.48-30,331.86

Finding the Fourth Proportional to 80,280.18, 120,354.48 and 30,331.86

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Solution

The fourth proportional to 80,280.18, 120,354.48 and 30,331.86 is: 45,472.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,280.18 : 120,354.48 = 30,331.86 : x
  2. Step 2: Convert to fraction form
    80,280.18/120,354.48 = 30,331.86/x
  3. Step 3: Cross multiply
    80,280.18x = 120,354.48 × 30,331.86
  4. Step 4: Simplify right side
    80,280.18x = 3,650,575,237.73
  5. Step 5: Solve for x
    x = 3,650,575,237.73/80,280.18
  6. Step 6: Final answer
    x = 45,472.93

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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.