Home / 54,123.84-81,111.60-30,442.86

Finding the Fourth Proportional to 54,123.84, 81,111.60 and 30,442.86

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Solution

The fourth proportional to 54,123.84, 81,111.60 and 30,442.86 is: 45,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,123.84 : 81,111.60 = 30,442.86 : x
  2. Step 2: Convert to fraction form
    54,123.84/81,111.60 = 30,442.86/x
  3. Step 3: Cross multiply
    54,123.84x = 81,111.60 × 30,442.86
  4. Step 4: Simplify right side
    54,123.84x = 2,469,269,083.18
  5. Step 5: Solve for x
    x = 2,469,269,083.18/54,123.84
  6. Step 6: Final answer
    x = 45,622.58

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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.