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Finding the Fourth Proportional to 87,897, 121,297.86 and 50,170.44

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Solution

The fourth proportional to 87,897, 121,297.86 and 50,170.44 is: 69,235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,897 : 121,297.86 = 50,170.44 : x
  2. Step 2: Convert to fraction form
    87,897/121,297.86 = 50,170.44/x
  3. Step 3: Cross multiply
    87,897x = 121,297.86 × 50,170.44
  4. Step 4: Simplify right side
    87,897x = 6,085,567,007.26
  5. Step 5: Solve for x
    x = 6,085,567,007.26/87,897
  6. Step 6: Final answer
    x = 69,235.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.