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Finding the Fourth Proportional to 87,843.60, 121,211.10 and 53,370.41

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Solution

The fourth proportional to 87,843.60, 121,211.10 and 53,370.41 is: 73,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,843.60 : 121,211.10 = 53,370.41 : x
  2. Step 2: Convert to fraction form
    87,843.60/121,211.10 = 53,370.41/x
  3. Step 3: Cross multiply
    87,843.60x = 121,211.10 × 53,370.41
  4. Step 4: Simplify right side
    87,843.60x = 6,469,085,497.50
  5. Step 5: Solve for x
    x = 6,469,085,497.50/87,843.60
  6. Step 6: Final answer
    x = 73,643.22

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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.