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Finding the Fourth Proportional to 69,765.78, 104,647.77 and 17,175.72

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Solution

The fourth proportional to 69,765.78, 104,647.77 and 17,175.72 is: 25,763.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,765.78 : 104,647.77 = 17,175.72 : x
  2. Step 2: Convert to fraction form
    69,765.78/104,647.77 = 17,175.72/x
  3. Step 3: Cross multiply
    69,765.78x = 104,647.77 × 17,175.72
  4. Step 4: Simplify right side
    69,765.78x = 1,797,400,796.14
  5. Step 5: Solve for x
    x = 1,797,400,796.14/69,765.78
  6. Step 6: Final answer
    x = 25,763.36

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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.