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Finding the Fourth Proportional to 31,649.60, 43,662.72 and 19,067.12

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Solution

The fourth proportional to 31,649.60, 43,662.72 and 19,067.12 is: 26,304.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,649.60 : 43,662.72 = 19,067.12 : x
  2. Step 2: Convert to fraction form
    31,649.60/43,662.72 = 19,067.12/x
  3. Step 3: Cross multiply
    31,649.60x = 43,662.72 × 19,067.12
  4. Step 4: Simplify right side
    31,649.60x = 832,522,321.77
  5. Step 5: Solve for x
    x = 832,522,321.77/31,649.60
  6. Step 6: Final answer
    x = 26,304.36

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