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Finding the Fourth Proportional to 79,660.77, 109,935.81 and 43,850.40

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Solution

The fourth proportional to 79,660.77, 109,935.81 and 43,850.40 is: 60,515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,660.77 : 109,935.81 = 43,850.40 : x
  2. Step 2: Convert to fraction form
    79,660.77/109,935.81 = 43,850.40/x
  3. Step 3: Cross multiply
    79,660.77x = 109,935.81 × 43,850.40
  4. Step 4: Simplify right side
    79,660.77x = 4,820,729,242.82
  5. Step 5: Solve for x
    x = 4,820,729,242.82/79,660.77
  6. Step 6: Final answer
    x = 60,515.72

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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.