Home / 90,446.38-135,619.88-71,845.54

Finding the Fourth Proportional to 90,446.38, 135,619.88 and 71,845.54

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Solution

The fourth proportional to 90,446.38, 135,619.88 and 71,845.54 is: 107,728.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,446.38 : 135,619.88 = 71,845.54 : x
  2. Step 2: Convert to fraction form
    90,446.38/135,619.88 = 71,845.54/x
  3. Step 3: Cross multiply
    90,446.38x = 135,619.88 × 71,845.54
  4. Step 4: Simplify right side
    90,446.38x = 9,743,683,513.34
  5. Step 5: Solve for x
    x = 9,743,683,513.34/90,446.38
  6. Step 6: Final answer
    x = 107,728.84

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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.