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Finding the Fourth Proportional to 39,429.65, 54,398.94 and 25,290.29

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Solution

The fourth proportional to 39,429.65, 54,398.94 and 25,290.29 is: 34,891.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429.65 : 54,398.94 = 25,290.29 : x
  2. Step 2: Convert to fraction form
    39,429.65/54,398.94 = 25,290.29/x
  3. Step 3: Cross multiply
    39,429.65x = 54,398.94 × 25,290.29
  4. Step 4: Simplify right side
    39,429.65x = 1,375,764,968.29
  5. Step 5: Solve for x
    x = 1,375,764,968.29/39,429.65
  6. Step 6: Final answer
    x = 34,891.64

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.