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Finding the Fourth Proportional to 79,687.28, 109,964.44 and 43,880.40

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Solution

The fourth proportional to 79,687.28, 109,964.44 and 43,880.40 is: 60,552.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,687.28 : 109,964.44 = 43,880.40 : x
  2. Step 2: Convert to fraction form
    79,687.28/109,964.44 = 43,880.40/x
  3. Step 3: Cross multiply
    79,687.28x = 109,964.44 × 43,880.40
  4. Step 4: Simplify right side
    79,687.28x = 4,825,283,612.98
  5. Step 5: Solve for x
    x = 4,825,283,612.98/79,687.28
  6. Step 6: Final answer
    x = 60,552.75

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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.