Home / 40,775.82-61,161-11,191.20

Finding the Fourth Proportional to 40,775.82, 61,161 and 11,191.20

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Solution

The fourth proportional to 40,775.82, 61,161 and 11,191.20 is: 16,786.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,775.82 : 61,161 = 11,191.20 : x
  2. Step 2: Convert to fraction form
    40,775.82/61,161 = 11,191.20/x
  3. Step 3: Cross multiply
    40,775.82x = 61,161 × 11,191.20
  4. Step 4: Simplify right side
    40,775.82x = 684,464,983.20
  5. Step 5: Solve for x
    x = 684,464,983.20/40,775.82
  6. Step 6: Final answer
    x = 16,786.05

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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.