Home / 81,856.44-122,784.66-54,147.96

Finding the Fourth Proportional to 81,856.44, 122,784.66 and 54,147.96

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Solution

The fourth proportional to 81,856.44, 122,784.66 and 54,147.96 is: 81,221.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,856.44 : 122,784.66 = 54,147.96 : x
  2. Step 2: Convert to fraction form
    81,856.44/122,784.66 = 54,147.96/x
  3. Step 3: Cross multiply
    81,856.44x = 122,784.66 × 54,147.96
  4. Step 4: Simplify right side
    81,856.44x = 6,648,538,858.29
  5. Step 5: Solve for x
    x = 6,648,538,858.29/81,856.44
  6. Step 6: Final answer
    x = 81,221.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.