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Finding the Fourth Proportional to 73,958.70, 102,067.11 and 42,137.58

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Solution

The fourth proportional to 73,958.70, 102,067.11 and 42,137.58 is: 58,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,958.70 : 102,067.11 = 42,137.58 : x
  2. Step 2: Convert to fraction form
    73,958.70/102,067.11 = 42,137.58/x
  3. Step 3: Cross multiply
    73,958.70x = 102,067.11 × 42,137.58
  4. Step 4: Simplify right side
    73,958.70x = 4,300,861,012.99
  5. Step 5: Solve for x
    x = 4,300,861,012.99/73,958.70
  6. Step 6: Final answer
    x = 58,152.20

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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.