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Finding the Fourth Proportional to 74,729.78, 102,917.13 and 73,096.82

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Solution

The fourth proportional to 74,729.78, 102,917.13 and 73,096.82 is: 100,668.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,729.78 : 102,917.13 = 73,096.82 : x
  2. Step 2: Convert to fraction form
    74,729.78/102,917.13 = 73,096.82/x
  3. Step 3: Cross multiply
    74,729.78x = 102,917.13 × 73,096.82
  4. Step 4: Simplify right side
    74,729.78x = 7,522,914,411.94
  5. Step 5: Solve for x
    x = 7,522,914,411.94/74,729.78
  6. Step 6: Final answer
    x = 100,668.23

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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.