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Finding the Fourth Proportional to 78,983.82, 118,481.85 and 26,393.49

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Solution

The fourth proportional to 78,983.82, 118,481.85 and 26,393.49 is: 39,592.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,983.82 : 118,481.85 = 26,393.49 : x
  2. Step 2: Convert to fraction form
    78,983.82/118,481.85 = 26,393.49/x
  3. Step 3: Cross multiply
    78,983.82x = 118,481.85 × 26,393.49
  4. Step 4: Simplify right side
    78,983.82x = 3,127,149,523.16
  5. Step 5: Solve for x
    x = 3,127,149,523.16/78,983.82
  6. Step 6: Final answer
    x = 39,592.28

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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.