Home / 80,366.48-120,535.96-21,202.72

Finding the Fourth Proportional to 80,366.48, 120,535.96 and 21,202.72

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Solution

The fourth proportional to 80,366.48, 120,535.96 and 21,202.72 is: 31,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,366.48 : 120,535.96 = 21,202.72 : x
  2. Step 2: Convert to fraction form
    80,366.48/120,535.96 = 21,202.72/x
  3. Step 3: Cross multiply
    80,366.48x = 120,535.96 × 21,202.72
  4. Step 4: Simplify right side
    80,366.48x = 2,555,690,209.81
  5. Step 5: Solve for x
    x = 2,555,690,209.81/80,366.48
  6. Step 6: Final answer
    x = 31,800.45

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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.