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Finding the Fourth Proportional to 67,900.20, 101,879.10 and 32,821.80

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Solution

The fourth proportional to 67,900.20, 101,879.10 and 32,821.80 is: 49,246.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,900.20 : 101,879.10 = 32,821.80 : x
  2. Step 2: Convert to fraction form
    67,900.20/101,879.10 = 32,821.80/x
  3. Step 3: Cross multiply
    67,900.20x = 101,879.10 × 32,821.80
  4. Step 4: Simplify right side
    67,900.20x = 3,343,855,444.38
  5. Step 5: Solve for x
    x = 3,343,855,444.38/67,900.20
  6. Step 6: Final answer
    x = 49,246.62

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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.