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Finding the Fourth Proportional to 79,682.48, 119,499.96 and 27,080

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Solution

The fourth proportional to 79,682.48, 119,499.96 and 27,080 is: 40,611.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,682.48 : 119,499.96 = 27,080 : x
  2. Step 2: Convert to fraction form
    79,682.48/119,499.96 = 27,080/x
  3. Step 3: Cross multiply
    79,682.48x = 119,499.96 × 27,080
  4. Step 4: Simplify right side
    79,682.48x = 3,236,058,916.80
  5. Step 5: Solve for x
    x = 3,236,058,916.80/79,682.48
  6. Step 6: Final answer
    x = 40,611.93

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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.