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Finding the Fourth Proportional to 68,771.52, 103,150.40 and 22,011.84

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Solution

The fourth proportional to 68,771.52, 103,150.40 and 22,011.84 is: 33,015.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,771.52 : 103,150.40 = 22,011.84 : x
  2. Step 2: Convert to fraction form
    68,771.52/103,150.40 = 22,011.84/x
  3. Step 3: Cross multiply
    68,771.52x = 103,150.40 × 22,011.84
  4. Step 4: Simplify right side
    68,771.52x = 2,270,530,100.74
  5. Step 5: Solve for x
    x = 2,270,530,100.74/68,771.52
  6. Step 6: Final answer
    x = 33,015.56

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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.