Home / 81,918.95-122,720.98-50,236.62

Finding the Fourth Proportional to 81,918.95, 122,720.98 and 50,236.62

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Solution

The fourth proportional to 81,918.95, 122,720.98 and 50,236.62 is: 75,258.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,918.95 : 122,720.98 = 50,236.62 : x
  2. Step 2: Convert to fraction form
    81,918.95/122,720.98 = 50,236.62/x
  3. Step 3: Cross multiply
    81,918.95x = 122,720.98 × 50,236.62
  4. Step 4: Simplify right side
    81,918.95x = 6,165,087,112.70
  5. Step 5: Solve for x
    x = 6,165,087,112.70/81,918.95
  6. Step 6: Final answer
    x = 75,258.38

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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.