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Finding the Fourth Proportional to 79,349.74, 109,502.78 and 43,540.02

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Solution

The fourth proportional to 79,349.74, 109,502.78 and 43,540.02 is: 60,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,349.74 : 109,502.78 = 43,540.02 : x
  2. Step 2: Convert to fraction form
    79,349.74/109,502.78 = 43,540.02/x
  3. Step 3: Cross multiply
    79,349.74x = 109,502.78 × 43,540.02
  4. Step 4: Simplify right side
    79,349.74x = 4,767,753,013.56
  5. Step 5: Solve for x
    x = 4,767,753,013.56/79,349.74
  6. Step 6: Final answer
    x = 60,085.30

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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.