Home / 45,426.12-68,138.46-11,691.88

Finding the Fourth Proportional to 45,426.12, 68,138.46 and 11,691.88

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Solution

The fourth proportional to 45,426.12, 68,138.46 and 11,691.88 is: 17,537.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,426.12 : 68,138.46 = 11,691.88 : x
  2. Step 2: Convert to fraction form
    45,426.12/68,138.46 = 11,691.88/x
  3. Step 3: Cross multiply
    45,426.12x = 68,138.46 × 11,691.88
  4. Step 4: Simplify right side
    45,426.12x = 796,666,697.70
  5. Step 5: Solve for x
    x = 796,666,697.70/45,426.12
  6. Step 6: Final answer
    x = 17,537.63

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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.