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Finding the Fourth Proportional to 75,163.63, 112,745.04 and 19,003.72

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Solution

The fourth proportional to 75,163.63, 112,745.04 and 19,003.72 is: 28,505.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,163.63 : 112,745.04 = 19,003.72 : x
  2. Step 2: Convert to fraction form
    75,163.63/112,745.04 = 19,003.72/x
  3. Step 3: Cross multiply
    75,163.63x = 112,745.04 × 19,003.72
  4. Step 4: Simplify right side
    75,163.63x = 2,142,575,171.55
  5. Step 5: Solve for x
    x = 2,142,575,171.55/75,163.63
  6. Step 6: Final answer
    x = 28,505.48

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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.