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Finding the Fourth Proportional to 69,481.76, 104,222.64 and 16,891.28

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Solution

The fourth proportional to 69,481.76, 104,222.64 and 16,891.28 is: 25,336.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,481.76 : 104,222.64 = 16,891.28 : x
  2. Step 2: Convert to fraction form
    69,481.76/104,222.64 = 16,891.28/x
  3. Step 3: Cross multiply
    69,481.76x = 104,222.64 × 16,891.28
  4. Step 4: Simplify right side
    69,481.76x = 1,760,453,794.58
  5. Step 5: Solve for x
    x = 1,760,453,794.58/69,481.76
  6. Step 6: Final answer
    x = 25,336.92

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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.