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Finding the Fourth Proportional to 80,427.88, 120,663.42 and 35,453.08

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Solution

The fourth proportional to 80,427.88, 120,663.42 and 35,453.08 is: 53,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,427.88 : 120,663.42 = 35,453.08 : x
  2. Step 2: Convert to fraction form
    80,427.88/120,663.42 = 35,453.08/x
  3. Step 3: Cross multiply
    80,427.88x = 120,663.42 × 35,453.08
  4. Step 4: Simplify right side
    80,427.88x = 4,277,889,882.33
  5. Step 5: Solve for x
    x = 4,277,889,882.33/80,427.88
  6. Step 6: Final answer
    x = 53,189.14

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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.