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Finding the Fourth Proportional to 69,415.80, 104,123.70 and 16,825.28

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Solution

The fourth proportional to 69,415.80, 104,123.70 and 16,825.28 is: 25,237.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,415.80 : 104,123.70 = 16,825.28 : x
  2. Step 2: Convert to fraction form
    69,415.80/104,123.70 = 16,825.28/x
  3. Step 3: Cross multiply
    69,415.80x = 104,123.70 × 16,825.28
  4. Step 4: Simplify right side
    69,415.80x = 1,751,910,407.14
  5. Step 5: Solve for x
    x = 1,751,910,407.14/69,415.80
  6. Step 6: Final answer
    x = 25,237.92

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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.