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Finding the Fourth Proportional to 71,982.36, 99,334.50 and 40,150.44

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Solution

The fourth proportional to 71,982.36, 99,334.50 and 40,150.44 is: 55,406.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,982.36 : 99,334.50 = 40,150.44 : x
  2. Step 2: Convert to fraction form
    71,982.36/99,334.50 = 40,150.44/x
  3. Step 3: Cross multiply
    71,982.36x = 99,334.50 × 40,150.44
  4. Step 4: Simplify right side
    71,982.36x = 3,988,323,882.18
  5. Step 5: Solve for x
    x = 3,988,323,882.18/71,982.36
  6. Step 6: Final answer
    x = 55,406.96

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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.