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Finding the Fourth Proportional to 73,213.20, 109,601.10 and 43,615.80

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Solution

The fourth proportional to 73,213.20, 109,601.10 and 43,615.80 is: 65,293.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,213.20 : 109,601.10 = 43,615.80 : x
  2. Step 2: Convert to fraction form
    73,213.20/109,601.10 = 43,615.80/x
  3. Step 3: Cross multiply
    73,213.20x = 109,601.10 × 43,615.80
  4. Step 4: Simplify right side
    73,213.20x = 4,780,339,657.38
  5. Step 5: Solve for x
    x = 4,780,339,657.38/73,213.20
  6. Step 6: Final answer
    x = 65,293.41

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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.