Home / 45,385.20-68,080.03-12,105.56

Finding the Fourth Proportional to 45,385.20, 68,080.03 and 12,105.56

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Solution

The fourth proportional to 45,385.20, 68,080.03 and 12,105.56 is: 18,158.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,385.20 : 68,080.03 = 12,105.56 : x
  2. Step 2: Convert to fraction form
    45,385.20/68,080.03 = 12,105.56/x
  3. Step 3: Cross multiply
    45,385.20x = 68,080.03 × 12,105.56
  4. Step 4: Simplify right side
    45,385.20x = 824,147,027.90
  5. Step 5: Solve for x
    x = 824,147,027.90/45,385.20
  6. Step 6: Final answer
    x = 18,158.94

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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.