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Finding the Fourth Proportional to 73,137.70, 109,738.41 and 28,796.68

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Solution

The fourth proportional to 73,137.70, 109,738.41 and 28,796.68 is: 43,207.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,137.70 : 109,738.41 = 28,796.68 : x
  2. Step 2: Convert to fraction form
    73,137.70/109,738.41 = 28,796.68/x
  3. Step 3: Cross multiply
    73,137.70x = 109,738.41 × 28,796.68
  4. Step 4: Simplify right side
    73,137.70x = 3,160,101,876.48
  5. Step 5: Solve for x
    x = 3,160,101,876.48/73,137.70
  6. Step 6: Final answer
    x = 43,207.56

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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.