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Finding the Fourth Proportional to 84,508.38, 126,580.33 and 79,539.96

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Solution

The fourth proportional to 84,508.38, 126,580.33 and 79,539.96 is: 119,138.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,508.38 : 126,580.33 = 79,539.96 : x
  2. Step 2: Convert to fraction form
    84,508.38/126,580.33 = 79,539.96/x
  3. Step 3: Cross multiply
    84,508.38x = 126,580.33 × 79,539.96
  4. Step 4: Simplify right side
    84,508.38x = 10,068,194,247.07
  5. Step 5: Solve for x
    x = 10,068,194,247.07/84,508.38
  6. Step 6: Final answer
    x = 119,138.41

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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.