Home / 81,020.55-111,828.41-49,216.11

Finding the Fourth Proportional to 81,020.55, 111,828.41 and 49,216.11

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Solution

The fourth proportional to 81,020.55, 111,828.41 and 49,216.11 is: 67,930.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,020.55 : 111,828.41 = 49,216.11 : x
  2. Step 2: Convert to fraction form
    81,020.55/111,828.41 = 49,216.11/x
  3. Step 3: Cross multiply
    81,020.55x = 111,828.41 × 49,216.11
  4. Step 4: Simplify right side
    81,020.55x = 5,503,759,081.60
  5. Step 5: Solve for x
    x = 5,503,759,081.60/81,020.55
  6. Step 6: Final answer
    x = 67,930.41

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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.