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Finding the Fourth Proportional to 79,663.79, 109,939.97 and 43,853.42

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Solution

The fourth proportional to 79,663.79, 109,939.97 and 43,853.42 is: 60,519.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,663.79 : 109,939.97 = 43,853.42 : x
  2. Step 2: Convert to fraction form
    79,663.79/109,939.97 = 43,853.42/x
  3. Step 3: Cross multiply
    79,663.79x = 109,939.97 × 43,853.42
  4. Step 4: Simplify right side
    79,663.79x = 4,821,243,679.20
  5. Step 5: Solve for x
    x = 4,821,243,679.20/79,663.79
  6. Step 6: Final answer
    x = 60,519.89

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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.