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Finding the Fourth Proportional to 73,638.62, 110,455.72 and 20,333.84

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Solution

The fourth proportional to 73,638.62, 110,455.72 and 20,333.84 is: 30,500.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,638.62 : 110,455.72 = 20,333.84 : x
  2. Step 2: Convert to fraction form
    73,638.62/110,455.72 = 20,333.84/x
  3. Step 3: Cross multiply
    73,638.62x = 110,455.72 × 20,333.84
  4. Step 4: Simplify right side
    73,638.62x = 2,245,988,410.70
  5. Step 5: Solve for x
    x = 2,245,988,410.70/73,638.62
  6. Step 6: Final answer
    x = 30,500.14

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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.