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Finding the Fourth Proportional to 77,991.80, 116,996.84 and 27,375.36

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Solution

The fourth proportional to 77,991.80, 116,996.84 and 27,375.36 is: 41,066.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,991.80 : 116,996.84 = 27,375.36 : x
  2. Step 2: Convert to fraction form
    77,991.80/116,996.84 = 27,375.36/x
  3. Step 3: Cross multiply
    77,991.80x = 116,996.84 × 27,375.36
  4. Step 4: Simplify right side
    77,991.80x = 3,202,830,613.86
  5. Step 5: Solve for x
    x = 3,202,830,613.86/77,991.80
  6. Step 6: Final answer
    x = 41,066.25

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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.