Home / 90,469.20-135,606.60-34,287.60

Finding the Fourth Proportional to 90,469.20, 135,606.60 and 34,287.60

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Solution

The fourth proportional to 90,469.20, 135,606.60 and 34,287.60 is: 51,394.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,469.20 : 135,606.60 = 34,287.60 : x
  2. Step 2: Convert to fraction form
    90,469.20/135,606.60 = 34,287.60/x
  3. Step 3: Cross multiply
    90,469.20x = 135,606.60 × 34,287.60
  4. Step 4: Simplify right side
    90,469.20x = 4,649,624,858.16
  5. Step 5: Solve for x
    x = 4,649,624,858.16/90,469.20
  6. Step 6: Final answer
    x = 51,394.56

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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.