Home / 80,365.32-120,541.68-30,440.88

Finding the Fourth Proportional to 80,365.32, 120,541.68 and 30,440.88

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Solution

The fourth proportional to 80,365.32, 120,541.68 and 30,440.88 is: 45,658.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,365.32 : 120,541.68 = 30,440.88 : x
  2. Step 2: Convert to fraction form
    80,365.32/120,541.68 = 30,440.88/x
  3. Step 3: Cross multiply
    80,365.32x = 120,541.68 × 30,440.88
  4. Step 4: Simplify right side
    80,365.32x = 3,669,394,815.88
  5. Step 5: Solve for x
    x = 3,669,394,815.88/80,365.32
  6. Step 6: Final answer
    x = 45,658.93

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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.