Home / 67,198.38-100,768.38-20,440.32

Finding the Fourth Proportional to 67,198.38, 100,768.38 and 20,440.32

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Solution

The fourth proportional to 67,198.38, 100,768.38 and 20,440.32 is: 30,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,198.38 : 100,768.38 = 20,440.32 : x
  2. Step 2: Convert to fraction form
    67,198.38/100,768.38 = 20,440.32/x
  3. Step 3: Cross multiply
    67,198.38x = 100,768.38 × 20,440.32
  4. Step 4: Simplify right side
    67,198.38x = 2,059,737,933.08
  5. Step 5: Solve for x
    x = 2,059,737,933.08/67,198.38
  6. Step 6: Final answer
    x = 30,651.60

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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.