Home / 90,565.56-135,839.70-28,236.60

Finding the Fourth Proportional to 90,565.56, 135,839.70 and 28,236.60

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Solution

The fourth proportional to 90,565.56, 135,839.70 and 28,236.60 is: 42,352.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,565.56 : 135,839.70 = 28,236.60 : x
  2. Step 2: Convert to fraction form
    90,565.56/135,839.70 = 28,236.60/x
  3. Step 3: Cross multiply
    90,565.56x = 135,839.70 × 28,236.60
  4. Step 4: Simplify right side
    90,565.56x = 3,835,651,273.02
  5. Step 5: Solve for x
    x = 3,835,651,273.02/90,565.56
  6. Step 6: Final answer
    x = 42,352.21

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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.