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Finding the Fourth Proportional to 81,603.20, 122,171.20 and 50,227.20

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Solution

The fourth proportional to 81,603.20, 122,171.20 and 50,227.20 is: 75,197.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,603.20 : 122,171.20 = 50,227.20 : x
  2. Step 2: Convert to fraction form
    81,603.20/122,171.20 = 50,227.20/x
  3. Step 3: Cross multiply
    81,603.20x = 122,171.20 × 50,227.20
  4. Step 4: Simplify right side
    81,603.20x = 6,136,317,296.64
  5. Step 5: Solve for x
    x = 6,136,317,296.64/81,603.20
  6. Step 6: Final answer
    x = 75,197.02

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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.