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Finding the Fourth Proportional to 67,111.20, 100,551.60 and 43,725.60

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Solution

The fourth proportional to 67,111.20, 100,551.60 and 43,725.60 is: 65,513.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,111.20 : 100,551.60 = 43,725.60 : x
  2. Step 2: Convert to fraction form
    67,111.20/100,551.60 = 43,725.60/x
  3. Step 3: Cross multiply
    67,111.20x = 100,551.60 × 43,725.60
  4. Step 4: Simplify right side
    67,111.20x = 4,396,679,040.96
  5. Step 5: Solve for x
    x = 4,396,679,040.96/67,111.20
  6. Step 6: Final answer
    x = 65,513.34

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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.