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Finding the Fourth Proportional to 81,874.70, 122,812.05 and 22,710.37

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Solution

The fourth proportional to 81,874.70, 122,812.05 and 22,710.37 is: 34,065.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,874.70 : 122,812.05 = 22,710.37 : x
  2. Step 2: Convert to fraction form
    81,874.70/122,812.05 = 22,710.37/x
  3. Step 3: Cross multiply
    81,874.70x = 122,812.05 × 22,710.37
  4. Step 4: Simplify right side
    81,874.70x = 2,789,107,344.63
  5. Step 5: Solve for x
    x = 2,789,107,344.63/81,874.70
  6. Step 6: Final answer
    x = 34,065.56

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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.