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Finding the Fourth Proportional to 69,115.67, 103,668.64 and 26,987.84

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Solution

The fourth proportional to 69,115.67, 103,668.64 and 26,987.84 is: 40,479.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,115.67 : 103,668.64 = 26,987.84 : x
  2. Step 2: Convert to fraction form
    69,115.67/103,668.64 = 26,987.84/x
  3. Step 3: Cross multiply
    69,115.67x = 103,668.64 × 26,987.84
  4. Step 4: Simplify right side
    69,115.67x = 2,797,792,669.34
  5. Step 5: Solve for x
    x = 2,797,792,669.34/69,115.67
  6. Step 6: Final answer
    x = 40,479.86

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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.