Home / 89,921.70-124,141.66-54,120.50

Finding the Fourth Proportional to 89,921.70, 124,141.66 and 54,120.50

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Solution

The fourth proportional to 89,921.70, 124,141.66 and 54,120.50 is: 74,716.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,921.70 : 124,141.66 = 54,120.50 : x
  2. Step 2: Convert to fraction form
    89,921.70/124,141.66 = 54,120.50/x
  3. Step 3: Cross multiply
    89,921.70x = 124,141.66 × 54,120.50
  4. Step 4: Simplify right side
    89,921.70x = 6,718,608,710.03
  5. Step 5: Solve for x
    x = 6,718,608,710.03/89,921.70
  6. Step 6: Final answer
    x = 74,716.21

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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.