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Finding the Fourth Proportional to 67,246.20, 100,882.80 and 19,861.20

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Solution

The fourth proportional to 67,246.20, 100,882.80 and 19,861.20 is: 29,795.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,246.20 : 100,882.80 = 19,861.20 : x
  2. Step 2: Convert to fraction form
    67,246.20/100,882.80 = 19,861.20/x
  3. Step 3: Cross multiply
    67,246.20x = 100,882.80 × 19,861.20
  4. Step 4: Simplify right side
    67,246.20x = 2,003,653,467.36
  5. Step 5: Solve for x
    x = 2,003,653,467.36/67,246.20
  6. Step 6: Final answer
    x = 29,795.79

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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.