Home / 80,005.11-120,049.58-51,918.56

Finding the Fourth Proportional to 80,005.11, 120,049.58 and 51,918.56

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Solution

The fourth proportional to 80,005.11, 120,049.58 and 51,918.56 is: 77,905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,005.11 : 120,049.58 = 51,918.56 : x
  2. Step 2: Convert to fraction form
    80,005.11/120,049.58 = 51,918.56/x
  3. Step 3: Cross multiply
    80,005.11x = 120,049.58 × 51,918.56
  4. Step 4: Simplify right side
    80,005.11x = 6,232,801,322.20
  5. Step 5: Solve for x
    x = 6,232,801,322.20/80,005.11
  6. Step 6: Final answer
    x = 77,905.04

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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.