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Finding the Fourth Proportional to 79,361.78, 109,522.40 and 43,553.07

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Solution

The fourth proportional to 79,361.78, 109,522.40 and 43,553.07 is: 60,104.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,361.78 : 109,522.40 = 43,553.07 : x
  2. Step 2: Convert to fraction form
    79,361.78/109,522.40 = 43,553.07/x
  3. Step 3: Cross multiply
    79,361.78x = 109,522.40 × 43,553.07
  4. Step 4: Simplify right side
    79,361.78x = 4,770,036,536.00
  5. Step 5: Solve for x
    x = 4,770,036,536.00/79,361.78
  6. Step 6: Final answer
    x = 60,104.96

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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.