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Finding the Fourth Proportional to 68,914.20, 103,241.70 and 35,520.60

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Solution

The fourth proportional to 68,914.20, 103,241.70 and 35,520.60 is: 53,214.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,914.20 : 103,241.70 = 35,520.60 : x
  2. Step 2: Convert to fraction form
    68,914.20/103,241.70 = 35,520.60/x
  3. Step 3: Cross multiply
    68,914.20x = 103,241.70 × 35,520.60
  4. Step 4: Simplify right side
    68,914.20x = 3,667,207,129.02
  5. Step 5: Solve for x
    x = 3,667,207,129.02/68,914.20
  6. Step 6: Final answer
    x = 53,214.10

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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.