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Finding the Fourth Proportional to 39,395.76, 54,375.48 and 22,638.48

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Solution

The fourth proportional to 39,395.76, 54,375.48 and 22,638.48 is: 31,246.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,395.76 : 54,375.48 = 22,638.48 : x
  2. Step 2: Convert to fraction form
    39,395.76/54,375.48 = 22,638.48/x
  3. Step 3: Cross multiply
    39,395.76x = 54,375.48 × 22,638.48
  4. Step 4: Simplify right side
    39,395.76x = 1,230,978,216.47
  5. Step 5: Solve for x
    x = 1,230,978,216.47/39,395.76
  6. Step 6: Final answer
    x = 31,246.46

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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.