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Finding the Fourth Proportional to 40,795, 61,198.98 and 18,608.20

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Solution

The fourth proportional to 40,795, 61,198.98 and 18,608.20 is: 27,915.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,795 : 61,198.98 = 18,608.20 : x
  2. Step 2: Convert to fraction form
    40,795/61,198.98 = 18,608.20/x
  3. Step 3: Cross multiply
    40,795x = 61,198.98 × 18,608.20
  4. Step 4: Simplify right side
    40,795x = 1,138,802,859.64
  5. Step 5: Solve for x
    x = 1,138,802,859.64/40,795
  6. Step 6: Final answer
    x = 27,915.26

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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.