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Finding the Fourth Proportional to 69,481.67, 104,221.75 and 16,891.21

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Solution

The fourth proportional to 69,481.67, 104,221.75 and 16,891.21 is: 25,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,481.67 : 104,221.75 = 16,891.21 : x
  2. Step 2: Convert to fraction form
    69,481.67/104,221.75 = 16,891.21/x
  3. Step 3: Cross multiply
    69,481.67x = 104,221.75 × 16,891.21
  4. Step 4: Simplify right side
    69,481.67x = 1,760,431,465.82
  5. Step 5: Solve for x
    x = 1,760,431,465.82/69,481.67
  6. Step 6: Final answer
    x = 25,336.63

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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.