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Finding the Fourth Proportional to 29,067.68, 40,085.52 and 18,438.40

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Solution

The fourth proportional to 29,067.68, 40,085.52 and 18,438.40 is: 25,427.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,067.68 : 40,085.52 = 18,438.40 : x
  2. Step 2: Convert to fraction form
    29,067.68/40,085.52 = 18,438.40/x
  3. Step 3: Cross multiply
    29,067.68x = 40,085.52 × 18,438.40
  4. Step 4: Simplify right side
    29,067.68x = 739,112,851.97
  5. Step 5: Solve for x
    x = 739,112,851.97/29,067.68
  6. Step 6: Final answer
    x = 25,427.31

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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.