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Finding the Fourth Proportional to 79,667.80, 109,941.57 and 43,857.54

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Solution

The fourth proportional to 79,667.80, 109,941.57 and 43,857.54 is: 60,523.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,667.80 : 109,941.57 = 43,857.54 : x
  2. Step 2: Convert to fraction form
    79,667.80/109,941.57 = 43,857.54/x
  3. Step 3: Cross multiply
    79,667.80x = 109,941.57 × 43,857.54
  4. Step 4: Simplify right side
    79,667.80x = 4,821,766,803.94
  5. Step 5: Solve for x
    x = 4,821,766,803.94/79,667.80
  6. Step 6: Final answer
    x = 60,523.41

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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.