Home / 90,500.54-135,770.31-27,315.38

Finding the Fourth Proportional to 90,500.54, 135,770.31 and 27,315.38

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Solution

The fourth proportional to 90,500.54, 135,770.31 and 27,315.38 is: 40,978.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,500.54 : 135,770.31 = 27,315.38 : x
  2. Step 2: Convert to fraction form
    90,500.54/135,770.31 = 27,315.38/x
  3. Step 3: Cross multiply
    90,500.54x = 135,770.31 × 27,315.38
  4. Step 4: Simplify right side
    90,500.54x = 3,708,617,610.37
  5. Step 5: Solve for x
    x = 3,708,617,610.37/90,500.54
  6. Step 6: Final answer
    x = 40,978.96

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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.