Home / 80,231.20-120,346.79-21,066.77

Finding the Fourth Proportional to 80,231.20, 120,346.79 and 21,066.77

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Solution

The fourth proportional to 80,231.20, 120,346.79 and 21,066.77 is: 31,600.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,231.20 : 120,346.79 = 21,066.77 : x
  2. Step 2: Convert to fraction form
    80,231.20/120,346.79 = 21,066.77/x
  3. Step 3: Cross multiply
    80,231.20x = 120,346.79 × 21,066.77
  4. Step 4: Simplify right side
    80,231.20x = 2,535,318,145.17
  5. Step 5: Solve for x
    x = 2,535,318,145.17/80,231.20
  6. Step 6: Final answer
    x = 31,600.15

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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.