Home / 45,198.06-67,789.38-11,918.45

Finding the Fourth Proportional to 45,198.06, 67,789.38 and 11,918.45

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Solution

The fourth proportional to 45,198.06, 67,789.38 and 11,918.45 is: 17,875.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,198.06 : 67,789.38 = 11,918.45 : x
  2. Step 2: Convert to fraction form
    45,198.06/67,789.38 = 11,918.45/x
  3. Step 3: Cross multiply
    45,198.06x = 67,789.38 × 11,918.45
  4. Step 4: Simplify right side
    45,198.06x = 807,943,997.11
  5. Step 5: Solve for x
    x = 807,943,997.11/45,198.06
  6. Step 6: Final answer
    x = 17,875.63

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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.