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Finding the Fourth Proportional to 71,991.18, 107,940.48 and 29,900.28

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Solution

The fourth proportional to 71,991.18, 107,940.48 and 29,900.28 is: 44,831.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,991.18 : 107,940.48 = 29,900.28 : x
  2. Step 2: Convert to fraction form
    71,991.18/107,940.48 = 29,900.28/x
  3. Step 3: Cross multiply
    71,991.18x = 107,940.48 × 29,900.28
  4. Step 4: Simplify right side
    71,991.18x = 3,227,450,575.33
  5. Step 5: Solve for x
    x = 3,227,450,575.33/71,991.18
  6. Step 6: Final answer
    x = 44,831.19

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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.