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Finding the Fourth Proportional to 74,118.70, 102,283.68 and 40,127.41

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Solution

The fourth proportional to 74,118.70, 102,283.68 and 40,127.41 is: 55,375.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,118.70 : 102,283.68 = 40,127.41 : x
  2. Step 2: Convert to fraction form
    74,118.70/102,283.68 = 40,127.41/x
  3. Step 3: Cross multiply
    74,118.70x = 102,283.68 × 40,127.41
  4. Step 4: Simplify right side
    74,118.70x = 4,104,379,163.67
  5. Step 5: Solve for x
    x = 4,104,379,163.67/74,118.70
  6. Step 6: Final answer
    x = 55,375.76

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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.