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Finding the Fourth Proportional to 80,840.82, 111,550.28 and 45,028.28

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Solution

The fourth proportional to 80,840.82, 111,550.28 and 45,028.28 is: 62,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,840.82 : 111,550.28 = 45,028.28 : x
  2. Step 2: Convert to fraction form
    80,840.82/111,550.28 = 45,028.28/x
  3. Step 3: Cross multiply
    80,840.82x = 111,550.28 × 45,028.28
  4. Step 4: Simplify right side
    80,840.82x = 5,022,917,241.92
  5. Step 5: Solve for x
    x = 5,022,917,241.92/80,840.82
  6. Step 6: Final answer
    x = 62,133.43

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1.5x scale

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.