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Finding the Fourth Proportional to 79,663.96, 109,939.40 and 43,857.30

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Solution

The fourth proportional to 79,663.96, 109,939.40 and 43,857.30 is: 60,524.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,663.96 : 109,939.40 = 43,857.30 : x
  2. Step 2: Convert to fraction form
    79,663.96/109,939.40 = 43,857.30/x
  3. Step 3: Cross multiply
    79,663.96x = 109,939.40 × 43,857.30
  4. Step 4: Simplify right side
    79,663.96x = 4,821,645,247.62
  5. Step 5: Solve for x
    x = 4,821,645,247.62/79,663.96
  6. Step 6: Final answer
    x = 60,524.80

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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.