Home / 81,910.64-113,035.56-47,942.48

Finding the Fourth Proportional to 81,910.64, 113,035.56 and 47,942.48

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Solution

The fourth proportional to 81,910.64, 113,035.56 and 47,942.48 is: 66,159.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,910.64 : 113,035.56 = 47,942.48 : x
  2. Step 2: Convert to fraction form
    81,910.64/113,035.56 = 47,942.48/x
  3. Step 3: Cross multiply
    81,910.64x = 113,035.56 × 47,942.48
  4. Step 4: Simplify right side
    81,910.64x = 5,419,205,074.59
  5. Step 5: Solve for x
    x = 5,419,205,074.59/81,910.64
  6. Step 6: Final answer
    x = 66,159.96

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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.