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Finding the Fourth Proportional to 69,380.60, 104,071.41 and 16,790.09

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Solution

The fourth proportional to 69,380.60, 104,071.41 and 16,790.09 is: 25,185.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,380.60 : 104,071.41 = 16,790.09 : x
  2. Step 2: Convert to fraction form
    69,380.60/104,071.41 = 16,790.09/x
  3. Step 3: Cross multiply
    69,380.60x = 104,071.41 × 16,790.09
  4. Step 4: Simplify right side
    69,380.60x = 1,747,367,819.97
  5. Step 5: Solve for x
    x = 1,747,367,819.97/69,380.60
  6. Step 6: Final answer
    x = 25,185.25

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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.