Home / 90,769.92-135,921.60-55,602.96

Finding the Fourth Proportional to 90,769.92, 135,921.60 and 55,602.96

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Solution

The fourth proportional to 90,769.92, 135,921.60 and 55,602.96 is: 83,261.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,769.92 : 135,921.60 = 55,602.96 : x
  2. Step 2: Convert to fraction form
    90,769.92/135,921.60 = 55,602.96/x
  3. Step 3: Cross multiply
    90,769.92x = 135,921.60 × 55,602.96
  4. Step 4: Simplify right side
    90,769.92x = 7,557,643,287.94
  5. Step 5: Solve for x
    x = 7,557,643,287.94/90,769.92
  6. Step 6: Final answer
    x = 83,261.54

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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.