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Finding the Fourth Proportional to 39,891.80, 59,837.70 and 27,450.20

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Solution

The fourth proportional to 39,891.80, 59,837.70 and 27,450.20 is: 41,175.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,891.80 : 59,837.70 = 27,450.20 : x
  2. Step 2: Convert to fraction form
    39,891.80/59,837.70 = 27,450.20/x
  3. Step 3: Cross multiply
    39,891.80x = 59,837.70 × 27,450.20
  4. Step 4: Simplify right side
    39,891.80x = 1,642,556,832.54
  5. Step 5: Solve for x
    x = 1,642,556,832.54/39,891.80
  6. Step 6: Final answer
    x = 41,175.30

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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.