Home / 81,920.73-113,023.57-66,787.37

Finding the Fourth Proportional to 81,920.73, 113,023.57 and 66,787.37

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Solution

The fourth proportional to 81,920.73, 113,023.57 and 66,787.37 is: 92,144.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,920.73 : 113,023.57 = 66,787.37 : x
  2. Step 2: Convert to fraction form
    81,920.73/113,023.57 = 66,787.37/x
  3. Step 3: Cross multiply
    81,920.73x = 113,023.57 × 66,787.37
  4. Step 4: Simplify right side
    81,920.73x = 7,548,546,523.53
  5. Step 5: Solve for x
    x = 7,548,546,523.53/81,920.73
  6. Step 6: Final answer
    x = 92,144.53

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1.5x scale

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.