Home / 91,418.49-126,163.71-51,135.98

Finding the Fourth Proportional to 91,418.49, 126,163.71 and 51,135.98

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Solution

The fourth proportional to 91,418.49, 126,163.71 and 51,135.98 is: 70,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,418.49 : 126,163.71 = 51,135.98 : x
  2. Step 2: Convert to fraction form
    91,418.49/126,163.71 = 51,135.98/x
  3. Step 3: Cross multiply
    91,418.49x = 126,163.71 × 51,135.98
  4. Step 4: Simplify right side
    91,418.49x = 6,451,504,320.47
  5. Step 5: Solve for x
    x = 6,451,504,320.47/91,418.49
  6. Step 6: Final answer
    x = 70,571.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.