Home / 90,019.89-135,046.24-30,861.54

Finding the Fourth Proportional to 90,019.89, 135,046.24 and 30,861.54

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Solution

The fourth proportional to 90,019.89, 135,046.24 and 30,861.54 is: 46,297.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,019.89 : 135,046.24 = 30,861.54 : x
  2. Step 2: Convert to fraction form
    90,019.89/135,046.24 = 30,861.54/x
  3. Step 3: Cross multiply
    90,019.89x = 135,046.24 × 30,861.54
  4. Step 4: Simplify right side
    90,019.89x = 4,167,734,860.46
  5. Step 5: Solve for x
    x = 4,167,734,860.46/90,019.89
  6. Step 6: Final answer
    x = 46,297.93

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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.