Home / 81,867.44-122,801.16-54,158.96

Finding the Fourth Proportional to 81,867.44, 122,801.16 and 54,158.96

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Solution

The fourth proportional to 81,867.44, 122,801.16 and 54,158.96 is: 81,238.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,867.44 : 122,801.16 = 54,158.96 : x
  2. Step 2: Convert to fraction form
    81,867.44/122,801.16 = 54,158.96/x
  3. Step 3: Cross multiply
    81,867.44x = 122,801.16 × 54,158.96
  4. Step 4: Simplify right side
    81,867.44x = 6,650,783,112.39
  5. Step 5: Solve for x
    x = 6,650,783,112.39/81,867.44
  6. Step 6: Final answer
    x = 81,238.44

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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.