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Finding the Fourth Proportional to 79,489.92, 118,975.26 and 58,424.40

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Solution

The fourth proportional to 79,489.92, 118,975.26 and 58,424.40 is: 87,445.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,489.92 : 118,975.26 = 58,424.40 : x
  2. Step 2: Convert to fraction form
    79,489.92/118,975.26 = 58,424.40/x
  3. Step 3: Cross multiply
    79,489.92x = 118,975.26 × 58,424.40
  4. Step 4: Simplify right side
    79,489.92x = 6,951,058,180.34
  5. Step 5: Solve for x
    x = 6,951,058,180.34/79,489.92
  6. Step 6: Final answer
    x = 87,445.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.