Home / 81,721.33-122,766.53-48,463.21

Finding the Fourth Proportional to 81,721.33, 122,766.53 and 48,463.21

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Solution

The fourth proportional to 81,721.33, 122,766.53 and 48,463.21 is: 72,804.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721.33 : 122,766.53 = 48,463.21 : x
  2. Step 2: Convert to fraction form
    81,721.33/122,766.53 = 48,463.21/x
  3. Step 3: Cross multiply
    81,721.33x = 122,766.53 × 48,463.21
  4. Step 4: Simplify right side
    81,721.33x = 5,949,659,826.53
  5. Step 5: Solve for x
    x = 5,949,659,826.53/81,721.33
  6. Step 6: Final answer
    x = 72,804.25

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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.