Home / 67,189.19-100,798.36-20,440.85

Finding the Fourth Proportional to 67,189.19, 100,798.36 and 20,440.85

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Solution

The fourth proportional to 67,189.19, 100,798.36 and 20,440.85 is: 30,665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,189.19 : 100,798.36 = 20,440.85 : x
  2. Step 2: Convert to fraction form
    67,189.19/100,798.36 = 20,440.85/x
  3. Step 3: Cross multiply
    67,189.19x = 100,798.36 × 20,440.85
  4. Step 4: Simplify right side
    67,189.19x = 2,060,403,853.91
  5. Step 5: Solve for x
    x = 2,060,403,853.91/67,189.19
  6. Step 6: Final answer
    x = 30,665.71

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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.