Home / 81,033.12-111,824.70-45,231.96

Finding the Fourth Proportional to 81,033.12, 111,824.70 and 45,231.96

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Solution

The fourth proportional to 81,033.12, 111,824.70 and 45,231.96 is: 62,419.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,033.12 : 111,824.70 = 45,231.96 : x
  2. Step 2: Convert to fraction form
    81,033.12/111,824.70 = 45,231.96/x
  3. Step 3: Cross multiply
    81,033.12x = 111,824.70 × 45,231.96
  4. Step 4: Simplify right side
    81,033.12x = 5,058,050,357.41
  5. Step 5: Solve for x
    x = 5,058,050,357.41/81,033.12
  6. Step 6: Final answer
    x = 62,419.54

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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.