Home / 81,847.44-122,771.16-54,138.96

Finding the Fourth Proportional to 81,847.44, 122,771.16 and 54,138.96

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Solution

The fourth proportional to 81,847.44, 122,771.16 and 54,138.96 is: 81,208.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,847.44 : 122,771.16 = 54,138.96 : x
  2. Step 2: Convert to fraction form
    81,847.44/122,771.16 = 54,138.96/x
  3. Step 3: Cross multiply
    81,847.44x = 122,771.16 × 54,138.96
  4. Step 4: Simplify right side
    81,847.44x = 6,646,702,920.39
  5. Step 5: Solve for x
    x = 6,646,702,920.39/81,847.44
  6. Step 6: Final answer
    x = 81,208.44

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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.