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Finding the Fourth Proportional to 67,266.60, 100,768.55 and 40,905.96

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Solution

The fourth proportional to 67,266.60, 100,768.55 and 40,905.96 is: 61,279.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,266.60 : 100,768.55 = 40,905.96 : x
  2. Step 2: Convert to fraction form
    67,266.60/100,768.55 = 40,905.96/x
  3. Step 3: Cross multiply
    67,266.60x = 100,768.55 × 40,905.96
  4. Step 4: Simplify right side
    67,266.60x = 4,122,034,071.03
  5. Step 5: Solve for x
    x = 4,122,034,071.03/67,266.60
  6. Step 6: Final answer
    x = 61,279.06

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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.