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Finding the Fourth Proportional to 80,737.75, 111,418.10 and 45,409.75

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Solution

The fourth proportional to 80,737.75, 111,418.10 and 45,409.75 is: 62,665.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,737.75 : 111,418.10 = 45,409.75 : x
  2. Step 2: Convert to fraction form
    80,737.75/111,418.10 = 45,409.75/x
  3. Step 3: Cross multiply
    80,737.75x = 111,418.10 × 45,409.75
  4. Step 4: Simplify right side
    80,737.75x = 5,059,468,066.48
  5. Step 5: Solve for x
    x = 5,059,468,066.48/80,737.75
  6. Step 6: Final answer
    x = 62,665.46

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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.