Home / 90,273.96-135,321.75-42,805.80

Finding the Fourth Proportional to 90,273.96, 135,321.75 and 42,805.80

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Solution

The fourth proportional to 90,273.96, 135,321.75 and 42,805.80 is: 64,166.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,273.96 : 135,321.75 = 42,805.80 : x
  2. Step 2: Convert to fraction form
    90,273.96/135,321.75 = 42,805.80/x
  3. Step 3: Cross multiply
    90,273.96x = 135,321.75 × 42,805.80
  4. Step 4: Simplify right side
    90,273.96x = 5,792,555,766.15
  5. Step 5: Solve for x
    x = 5,792,555,766.15/90,273.96
  6. Step 6: Final answer
    x = 64,166.41

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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.