Home / 80,624.21-120,936.09-21,459.94

Finding the Fourth Proportional to 80,624.21, 120,936.09 and 21,459.94

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Solution

The fourth proportional to 80,624.21, 120,936.09 and 21,459.94 is: 32,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,624.21 : 120,936.09 = 21,459.94 : x
  2. Step 2: Convert to fraction form
    80,624.21/120,936.09 = 21,459.94/x
  3. Step 3: Cross multiply
    80,624.21x = 120,936.09 × 21,459.94
  4. Step 4: Simplify right side
    80,624.21x = 2,595,280,892.66
  5. Step 5: Solve for x
    x = 2,595,280,892.66/80,624.21
  6. Step 6: Final answer
    x = 32,189.85

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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.