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Finding the Fourth Proportional to 39,255, 54,172.44 and 22,488

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Solution

The fourth proportional to 39,255, 54,172.44 and 22,488 is: 31,033.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,255 : 54,172.44 = 22,488 : x
  2. Step 2: Convert to fraction form
    39,255/54,172.44 = 22,488/x
  3. Step 3: Cross multiply
    39,255x = 54,172.44 × 22,488
  4. Step 4: Simplify right side
    39,255x = 1,218,229,830.72
  5. Step 5: Solve for x
    x = 1,218,229,830.72/39,255
  6. Step 6: Final answer
    x = 31,033.75

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Why These Related Problems?

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