Home / 80,512.20-120,624.30-38,867.40

Finding the Fourth Proportional to 80,512.20, 120,624.30 and 38,867.40

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Solution

The fourth proportional to 80,512.20, 120,624.30 and 38,867.40 is: 58,231.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,512.20 : 120,624.30 = 38,867.40 : x
  2. Step 2: Convert to fraction form
    80,512.20/120,624.30 = 38,867.40/x
  3. Step 3: Cross multiply
    80,512.20x = 120,624.30 × 38,867.40
  4. Step 4: Simplify right side
    80,512.20x = 4,688,352,917.82
  5. Step 5: Solve for x
    x = 4,688,352,917.82/80,512.20
  6. Step 6: Final answer
    x = 58,231.58

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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.