Home / 66,778.50-100,177.61-19,393.95

Finding the Fourth Proportional to 66,778.50, 100,177.61 and 19,393.95

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Solution

The fourth proportional to 66,778.50, 100,177.61 and 19,393.95 is: 29,093.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,778.50 : 100,177.61 = 19,393.95 : x
  2. Step 2: Convert to fraction form
    66,778.50/100,177.61 = 19,393.95/x
  3. Step 3: Cross multiply
    66,778.50x = 100,177.61 × 19,393.95
  4. Step 4: Simplify right side
    66,778.50x = 1,942,839,462.49
  5. Step 5: Solve for x
    x = 1,942,839,462.49/66,778.50
  6. Step 6: Final answer
    x = 29,093.79

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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.