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Finding the Fourth Proportional to 69,850.22, 104,744.80 and 19,919.20

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Solution

The fourth proportional to 69,850.22, 104,744.80 and 19,919.20 is: 29,870.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,850.22 : 104,744.80 = 19,919.20 : x
  2. Step 2: Convert to fraction form
    69,850.22/104,744.80 = 19,919.20/x
  3. Step 3: Cross multiply
    69,850.22x = 104,744.80 × 19,919.20
  4. Step 4: Simplify right side
    69,850.22x = 2,086,432,620.16
  5. Step 5: Solve for x
    x = 2,086,432,620.16/69,850.22
  6. Step 6: Final answer
    x = 29,870.09

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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.