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Finding the Fourth Proportional to 78,982.92, 108,996.03 and 43,174.98

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Solution

The fourth proportional to 78,982.92, 108,996.03 and 43,174.98 is: 59,581.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,982.92 : 108,996.03 = 43,174.98 : x
  2. Step 2: Convert to fraction form
    78,982.92/108,996.03 = 43,174.98/x
  3. Step 3: Cross multiply
    78,982.92x = 108,996.03 × 43,174.98
  4. Step 4: Simplify right side
    78,982.92x = 4,705,901,415.33
  5. Step 5: Solve for x
    x = 4,705,901,415.33/78,982.92
  6. Step 6: Final answer
    x = 59,581.25

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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.