Home / 98,435.88-135,839.62-53,724.20

Finding the Fourth Proportional to 98,435.88, 135,839.62 and 53,724.20

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Solution

The fourth proportional to 98,435.88, 135,839.62 and 53,724.20 is: 74,138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,435.88 : 135,839.62 = 53,724.20 : x
  2. Step 2: Convert to fraction form
    98,435.88/135,839.62 = 53,724.20/x
  3. Step 3: Cross multiply
    98,435.88x = 135,839.62 × 53,724.20
  4. Step 4: Simplify right side
    98,435.88x = 7,297,874,912.80
  5. Step 5: Solve for x
    x = 7,297,874,912.80/98,435.88
  6. Step 6: Final answer
    x = 74,138.36

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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.