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Finding the Fourth Proportional to 73,266.20, 109,769.70 and 68,600.60

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Solution

The fourth proportional to 73,266.20, 109,769.70 and 68,600.60 is: 102,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,266.20 : 109,769.70 = 68,600.60 : x
  2. Step 2: Convert to fraction form
    73,266.20/109,769.70 = 68,600.60/x
  3. Step 3: Cross multiply
    73,266.20x = 109,769.70 × 68,600.60
  4. Step 4: Simplify right side
    73,266.20x = 7,530,267,281.82
  5. Step 5: Solve for x
    x = 7,530,267,281.82/73,266.20
  6. Step 6: Final answer
    x = 102,779.55

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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.