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Finding the Fourth Proportional to 39,991, 55,187.58 and 22,327

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Solution

The fourth proportional to 39,991, 55,187.58 and 22,327 is: 30,811.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,991 : 55,187.58 = 22,327 : x
  2. Step 2: Convert to fraction form
    39,991/55,187.58 = 22,327/x
  3. Step 3: Cross multiply
    39,991x = 55,187.58 × 22,327
  4. Step 4: Simplify right side
    39,991x = 1,232,173,098.66
  5. Step 5: Solve for x
    x = 1,232,173,098.66/39,991
  6. Step 6: Final answer
    x = 30,811.26

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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.