Home / 87,724.56-121,053.60-49,485.36

Finding the Fourth Proportional to 87,724.56, 121,053.60 and 49,485.36

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Solution

The fourth proportional to 87,724.56, 121,053.60 and 49,485.36 is: 68,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,724.56 : 121,053.60 = 49,485.36 : x
  2. Step 2: Convert to fraction form
    87,724.56/121,053.60 = 49,485.36/x
  3. Step 3: Cross multiply
    87,724.56x = 121,053.60 × 49,485.36
  4. Step 4: Simplify right side
    87,724.56x = 5,990,380,975.30
  5. Step 5: Solve for x
    x = 5,990,380,975.30/87,724.56
  6. Step 6: Final answer
    x = 68,286.25

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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.