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Finding the Fourth Proportional to 73,942.50, 102,040.65 and 40,408.50

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Solution

The fourth proportional to 73,942.50, 102,040.65 and 40,408.50 is: 55,763.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,942.50 : 102,040.65 = 40,408.50 : x
  2. Step 2: Convert to fraction form
    73,942.50/102,040.65 = 40,408.50/x
  3. Step 3: Cross multiply
    73,942.50x = 102,040.65 × 40,408.50
  4. Step 4: Simplify right side
    73,942.50x = 4,123,309,605.53
  5. Step 5: Solve for x
    x = 4,123,309,605.53/73,942.50
  6. Step 6: Final answer
    x = 55,763.73

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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.