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Finding the Fourth Proportional to 39,162, 54,043.62 and 22,395.36

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Solution

The fourth proportional to 39,162, 54,043.62 and 22,395.36 is: 30,905.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,162 : 54,043.62 = 22,395.36 : x
  2. Step 2: Convert to fraction form
    39,162/54,043.62 = 22,395.36/x
  3. Step 3: Cross multiply
    39,162x = 54,043.62 × 22,395.36
  4. Step 4: Simplify right side
    39,162x = 1,210,326,325.60
  5. Step 5: Solve for x
    x = 1,210,326,325.60/39,162
  6. Step 6: Final answer
    x = 30,905.63

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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.