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Finding the Fourth Proportional to 69,326.57, 103,965.54 and 19,393.25

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Solution

The fourth proportional to 69,326.57, 103,965.54 and 19,393.25 is: 29,083.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,326.57 : 103,965.54 = 19,393.25 : x
  2. Step 2: Convert to fraction form
    69,326.57/103,965.54 = 19,393.25/x
  3. Step 3: Cross multiply
    69,326.57x = 103,965.54 × 19,393.25
  4. Step 4: Simplify right side
    69,326.57x = 2,016,229,188.78
  5. Step 5: Solve for x
    x = 2,016,229,188.78/69,326.57
  6. Step 6: Final answer
    x = 29,083.07

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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.