Home / 66,786.52-100,020.75-38,647.27

Finding the Fourth Proportional to 66,786.52, 100,020.75 and 38,647.27

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Solution

The fourth proportional to 66,786.52, 100,020.75 and 38,647.27 is: 57,878.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.52 : 100,020.75 = 38,647.27 : x
  2. Step 2: Convert to fraction form
    66,786.52/100,020.75 = 38,647.27/x
  3. Step 3: Cross multiply
    66,786.52x = 100,020.75 × 38,647.27
  4. Step 4: Simplify right side
    66,786.52x = 3,865,528,930.85
  5. Step 5: Solve for x
    x = 3,865,528,930.85/66,786.52
  6. Step 6: Final answer
    x = 57,878.88

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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.