Home / 81,961.56-113,115.42-50,151.60

Finding the Fourth Proportional to 81,961.56, 113,115.42 and 50,151.60

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Solution

The fourth proportional to 81,961.56, 113,115.42 and 50,151.60 is: 69,214.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,961.56 : 113,115.42 = 50,151.60 : x
  2. Step 2: Convert to fraction form
    81,961.56/113,115.42 = 50,151.60/x
  3. Step 3: Cross multiply
    81,961.56x = 113,115.42 × 50,151.60
  4. Step 4: Simplify right side
    81,961.56x = 5,672,919,297.67
  5. Step 5: Solve for x
    x = 5,672,919,297.67/81,961.56
  6. Step 6: Final answer
    x = 69,214.39

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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.