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Finding the Fourth Proportional to 54,227.60, 81,317.10 and 20,936.60

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Solution

The fourth proportional to 54,227.60, 81,317.10 and 20,936.60 is: 31,395.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,227.60 : 81,317.10 = 20,936.60 : x
  2. Step 2: Convert to fraction form
    54,227.60/81,317.10 = 20,936.60/x
  3. Step 3: Cross multiply
    54,227.60x = 81,317.10 × 20,936.60
  4. Step 4: Simplify right side
    54,227.60x = 1,702,503,595.86
  5. Step 5: Solve for x
    x = 1,702,503,595.86/54,227.60
  6. Step 6: Final answer
    x = 31,395.52

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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.