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Finding the Fourth Proportional to 42,067.62, 63,093.96 and 15,408

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Solution

The fourth proportional to 42,067.62, 63,093.96 and 15,408 is: 23,109.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,067.62 : 63,093.96 = 15,408 : x
  2. Step 2: Convert to fraction form
    42,067.62/63,093.96 = 15,408/x
  3. Step 3: Cross multiply
    42,067.62x = 63,093.96 × 15,408
  4. Step 4: Simplify right side
    42,067.62x = 972,151,735.68
  5. Step 5: Solve for x
    x = 972,151,735.68/42,067.62
  6. Step 6: Final answer
    x = 23,109.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.