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Finding the Fourth Proportional to 80,108.90, 110,552.64 and 43,812.50

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Solution

The fourth proportional to 80,108.90, 110,552.64 and 43,812.50 is: 60,462.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,108.90 : 110,552.64 = 43,812.50 : x
  2. Step 2: Convert to fraction form
    80,108.90/110,552.64 = 43,812.50/x
  3. Step 3: Cross multiply
    80,108.90x = 110,552.64 × 43,812.50
  4. Step 4: Simplify right side
    80,108.90x = 4,843,587,540
  5. Step 5: Solve for x
    x = 4,843,587,540/80,108.90
  6. Step 6: Final answer
    x = 60,462.54

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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.