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Finding the Fourth Proportional to 69,318.75, 103,974.03 and 19,397.73

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Solution

The fourth proportional to 69,318.75, 103,974.03 and 19,397.73 is: 29,095.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,318.75 : 103,974.03 = 19,397.73 : x
  2. Step 2: Convert to fraction form
    69,318.75/103,974.03 = 19,397.73/x
  3. Step 3: Cross multiply
    69,318.75x = 103,974.03 × 19,397.73
  4. Step 4: Simplify right side
    69,318.75x = 2,016,860,160.95
  5. Step 5: Solve for x
    x = 2,016,860,160.95/69,318.75
  6. Step 6: Final answer
    x = 29,095.45

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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.