Home / 67,179.25-100,752.66-19,781.45

Finding the Fourth Proportional to 67,179.25, 100,752.66 and 19,781.45

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Solution

The fourth proportional to 67,179.25, 100,752.66 and 19,781.45 is: 29,667.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,179.25 : 100,752.66 = 19,781.45 : x
  2. Step 2: Convert to fraction form
    67,179.25/100,752.66 = 19,781.45/x
  3. Step 3: Cross multiply
    67,179.25x = 100,752.66 × 19,781.45
  4. Step 4: Simplify right side
    67,179.25x = 1,993,034,005.27
  5. Step 5: Solve for x
    x = 1,993,034,005.27/67,179.25
  6. Step 6: Final answer
    x = 29,667.41

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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.