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Finding the Fourth Proportional to 67,104, 100,667.52 and 20,361.60

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Solution

The fourth proportional to 67,104, 100,667.52 and 20,361.60 is: 30,545.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,104 : 100,667.52 = 20,361.60 : x
  2. Step 2: Convert to fraction form
    67,104/100,667.52 = 20,361.60/x
  3. Step 3: Cross multiply
    67,104x = 100,667.52 × 20,361.60
  4. Step 4: Simplify right side
    67,104x = 2,049,751,775.23
  5. Step 5: Solve for x
    x = 2,049,751,775.23/67,104
  6. Step 6: Final answer
    x = 30,545.90

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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.