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Finding the Fourth Proportional to 74,662.05, 111,991.71 and 18,502.29

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Solution

The fourth proportional to 74,662.05, 111,991.71 and 18,502.29 is: 27,753.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,662.05 : 111,991.71 = 18,502.29 : x
  2. Step 2: Convert to fraction form
    74,662.05/111,991.71 = 18,502.29/x
  3. Step 3: Cross multiply
    74,662.05x = 111,991.71 × 18,502.29
  4. Step 4: Simplify right side
    74,662.05x = 2,072,103,165.40
  5. Step 5: Solve for x
    x = 2,072,103,165.40/74,662.05
  6. Step 6: Final answer
    x = 27,753.10

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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.