Home / 54,076.55-74,625.21-31,428.80

Finding the Fourth Proportional to 54,076.55, 74,625.21 and 31,428.80

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Solution

The fourth proportional to 54,076.55, 74,625.21 and 31,428.80 is: 43,371.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,076.55 : 74,625.21 = 31,428.80 : x
  2. Step 2: Convert to fraction form
    54,076.55/74,625.21 = 31,428.80/x
  3. Step 3: Cross multiply
    54,076.55x = 74,625.21 × 31,428.80
  4. Step 4: Simplify right side
    54,076.55x = 2,345,380,986.61
  5. Step 5: Solve for x
    x = 2,345,380,986.61/54,076.55
  6. Step 6: Final answer
    x = 43,371.50

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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.