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Finding the Fourth Proportional to 72,126.21, 108,201.87 and 34,753.62

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Solution

The fourth proportional to 72,126.21, 108,201.87 and 34,753.62 is: 52,136.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,126.21 : 108,201.87 = 34,753.62 : x
  2. Step 2: Convert to fraction form
    72,126.21/108,201.87 = 34,753.62/x
  3. Step 3: Cross multiply
    72,126.21x = 108,201.87 × 34,753.62
  4. Step 4: Simplify right side
    72,126.21x = 3,760,406,673.27
  5. Step 5: Solve for x
    x = 3,760,406,673.27/72,126.21
  6. Step 6: Final answer
    x = 52,136.48

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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.