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Finding the Fourth Proportional to 67,327.70, 100,991.55 and 54,205.70

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Solution

The fourth proportional to 67,327.70, 100,991.55 and 54,205.70 is: 81,308.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,327.70 : 100,991.55 = 54,205.70 : x
  2. Step 2: Convert to fraction form
    67,327.70/100,991.55 = 54,205.70/x
  3. Step 3: Cross multiply
    67,327.70x = 100,991.55 × 54,205.70
  4. Step 4: Simplify right side
    67,327.70x = 5,474,317,661.84
  5. Step 5: Solve for x
    x = 5,474,317,661.84/67,327.70
  6. Step 6: Final answer
    x = 81,308.55

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1.5x scale

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.