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Finding the Fourth Proportional to 69,027.69, 103,541.42 and 19,107.65

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Solution

The fourth proportional to 69,027.69, 103,541.42 and 19,107.65 is: 28,661.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,027.69 : 103,541.42 = 19,107.65 : x
  2. Step 2: Convert to fraction form
    69,027.69/103,541.42 = 19,107.65/x
  3. Step 3: Cross multiply
    69,027.69x = 103,541.42 × 19,107.65
  4. Step 4: Simplify right side
    69,027.69x = 1,978,432,600.62
  5. Step 5: Solve for x
    x = 1,978,432,600.62/69,027.69
  6. Step 6: Final answer
    x = 28,661.43

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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.