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Finding the Fourth Proportional to 81,171.53, 112,016.39 and 45,361.54

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Solution

The fourth proportional to 81,171.53, 112,016.39 and 45,361.54 is: 62,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,171.53 : 112,016.39 = 45,361.54 : x
  2. Step 2: Convert to fraction form
    81,171.53/112,016.39 = 45,361.54/x
  3. Step 3: Cross multiply
    81,171.53x = 112,016.39 × 45,361.54
  4. Step 4: Simplify right side
    81,171.53x = 5,081,235,238.76
  5. Step 5: Solve for x
    x = 5,081,235,238.76/81,171.53
  6. Step 6: Final answer
    x = 62,598.73

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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.