Home / 54,189.18-74,787.28-30,321.90

Finding the Fourth Proportional to 54,189.18, 74,787.28 and 30,321.90

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Solution

The fourth proportional to 54,189.18, 74,787.28 and 30,321.90 is: 41,847.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,189.18 : 74,787.28 = 30,321.90 : x
  2. Step 2: Convert to fraction form
    54,189.18/74,787.28 = 30,321.90/x
  3. Step 3: Cross multiply
    54,189.18x = 74,787.28 × 30,321.90
  4. Step 4: Simplify right side
    54,189.18x = 2,267,692,425.43
  5. Step 5: Solve for x
    x = 2,267,692,425.43/54,189.18
  6. Step 6: Final answer
    x = 41,847.70

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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.