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Finding the Fourth Proportional to 54,252.69, 81,391.47 and 20,973.03

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Solution

The fourth proportional to 54,252.69, 81,391.47 and 20,973.03 is: 31,464.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,252.69 : 81,391.47 = 20,973.03 : x
  2. Step 2: Convert to fraction form
    54,252.69/81,391.47 = 20,973.03/x
  3. Step 3: Cross multiply
    54,252.69x = 81,391.47 × 20,973.03
  4. Step 4: Simplify right side
    54,252.69x = 1,707,025,742.05
  5. Step 5: Solve for x
    x = 1,707,025,742.05/54,252.69
  6. Step 6: Final answer
    x = 31,464.35

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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.