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Finding the Fourth Proportional to 79,571.74, 109,806.48 and 43,761.64

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Solution

The fourth proportional to 79,571.74, 109,806.48 and 43,761.64 is: 60,389.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,571.74 : 109,806.48 = 43,761.64 : x
  2. Step 2: Convert to fraction form
    79,571.74/109,806.48 = 43,761.64/x
  3. Step 3: Cross multiply
    79,571.74x = 109,806.48 × 43,761.64
  4. Step 4: Simplify right side
    79,571.74x = 4,805,311,647.43
  5. Step 5: Solve for x
    x = 4,805,311,647.43/79,571.74
  6. Step 6: Final answer
    x = 60,389.68

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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.