Home / 67,786.08-101,680.08-21,036

Finding the Fourth Proportional to 67,786.08, 101,680.08 and 21,036

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Solution

The fourth proportional to 67,786.08, 101,680.08 and 21,036 is: 31,554.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,786.08 : 101,680.08 = 21,036 : x
  2. Step 2: Convert to fraction form
    67,786.08/101,680.08 = 21,036/x
  3. Step 3: Cross multiply
    67,786.08x = 101,680.08 × 21,036
  4. Step 4: Simplify right side
    67,786.08x = 2,138,942,162.88
  5. Step 5: Solve for x
    x = 2,138,942,162.88/67,786.08
  6. Step 6: Final answer
    x = 31,554.30

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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.