Home / 81,708.12-112,765.37-54,906.44

Finding the Fourth Proportional to 81,708.12, 112,765.37 and 54,906.44

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Solution

The fourth proportional to 81,708.12, 112,765.37 and 54,906.44 is: 75,776.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,708.12 : 112,765.37 = 54,906.44 : x
  2. Step 2: Convert to fraction form
    81,708.12/112,765.37 = 54,906.44/x
  3. Step 3: Cross multiply
    81,708.12x = 112,765.37 × 54,906.44
  4. Step 4: Simplify right side
    81,708.12x = 6,191,544,183.62
  5. Step 5: Solve for x
    x = 6,191,544,183.62/81,708.12
  6. Step 6: Final answer
    x = 75,776.36

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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.