Home / 91,936.89-126,857.57-54,218.61

Finding the Fourth Proportional to 91,936.89, 126,857.57 and 54,218.61

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Solution

The fourth proportional to 91,936.89, 126,857.57 and 54,218.61 is: 74,812.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,936.89 : 126,857.57 = 54,218.61 : x
  2. Step 2: Convert to fraction form
    91,936.89/126,857.57 = 54,218.61/x
  3. Step 3: Cross multiply
    91,936.89x = 126,857.57 × 54,218.61
  4. Step 4: Simplify right side
    91,936.89x = 6,878,040,842.28
  5. Step 5: Solve for x
    x = 6,878,040,842.28/91,936.89
  6. Step 6: Final answer
    x = 74,812.63

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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.