Home / 92,021.37-137,986.94-54,571.42

Finding the Fourth Proportional to 92,021.37, 137,986.94 and 54,571.42

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Solution

The fourth proportional to 92,021.37, 137,986.94 and 54,571.42 is: 81,830.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,021.37 : 137,986.94 = 54,571.42 : x
  2. Step 2: Convert to fraction form
    92,021.37/137,986.94 = 54,571.42/x
  3. Step 3: Cross multiply
    92,021.37x = 137,986.94 × 54,571.42
  4. Step 4: Simplify right side
    92,021.37x = 7,530,143,566.17
  5. Step 5: Solve for x
    x = 7,530,143,566.17/92,021.37
  6. Step 6: Final answer
    x = 81,830.38

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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.