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Finding the Fourth Proportional to 79,994.52, 120,008.79 and 27,389.88

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Solution

The fourth proportional to 79,994.52, 120,008.79 and 27,389.88 is: 41,090.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,994.52 : 120,008.79 = 27,389.88 : x
  2. Step 2: Convert to fraction form
    79,994.52/120,008.79 = 27,389.88/x
  3. Step 3: Cross multiply
    79,994.52x = 120,008.79 × 27,389.88
  4. Step 4: Simplify right side
    79,994.52x = 3,287,026,357.05
  5. Step 5: Solve for x
    x = 3,287,026,357.05/79,994.52
  6. Step 6: Final answer
    x = 41,090.64

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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.