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Finding the Fourth Proportional to 43,940.68, 65,910.46 and 10,661

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Solution

The fourth proportional to 43,940.68, 65,910.46 and 10,661 is: 15,991.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,940.68 : 65,910.46 = 10,661 : x
  2. Step 2: Convert to fraction form
    43,940.68/65,910.46 = 10,661/x
  3. Step 3: Cross multiply
    43,940.68x = 65,910.46 × 10,661
  4. Step 4: Simplify right side
    43,940.68x = 702,671,414.06
  5. Step 5: Solve for x
    x = 702,671,414.06/43,940.68
  6. Step 6: Final answer
    x = 15,991.36

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1.5x scale

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.