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Finding the Fourth Proportional to 79,660.43, 109,931.36 and 43,850.25

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Solution

The fourth proportional to 79,660.43, 109,931.36 and 43,850.25 is: 60,513.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.43 : 109,931.36 = 43,850.25 : x
  2. Step 2: Convert to fraction form
    79,660.43/109,931.36 = 43,850.25/x
  3. Step 3: Cross multiply
    79,660.43x = 109,931.36 × 43,850.25
  4. Step 4: Simplify right side
    79,660.43x = 4,820,517,399.59
  5. Step 5: Solve for x
    x = 4,820,517,399.59/79,660.43
  6. Step 6: Final answer
    x = 60,513.33

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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.