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Finding the Fourth Proportional to 80,838.66, 111,550.11 and 45,027.90

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Solution

The fourth proportional to 80,838.66, 111,550.11 and 45,027.90 is: 62,134.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,838.66 : 111,550.11 = 45,027.90 : x
  2. Step 2: Convert to fraction form
    80,838.66/111,550.11 = 45,027.90/x
  3. Step 3: Cross multiply
    80,838.66x = 111,550.11 × 45,027.90
  4. Step 4: Simplify right side
    80,838.66x = 5,022,867,282.50
  5. Step 5: Solve for x
    x = 5,022,867,282.50/80,838.66
  6. Step 6: Final answer
    x = 62,134.47

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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.