Home / 81,096.96-121,660.56-31,175.04

Finding the Fourth Proportional to 81,096.96, 121,660.56 and 31,175.04

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Solution

The fourth proportional to 81,096.96, 121,660.56 and 31,175.04 is: 46,768.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,096.96 : 121,660.56 = 31,175.04 : x
  2. Step 2: Convert to fraction form
    81,096.96/121,660.56 = 31,175.04/x
  3. Step 3: Cross multiply
    81,096.96x = 121,660.56 × 31,175.04
  4. Step 4: Simplify right side
    81,096.96x = 3,792,772,824.42
  5. Step 5: Solve for x
    x = 3,792,772,824.42/81,096.96
  6. Step 6: Final answer
    x = 46,768.37

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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.