Home / 90,021.89-135,049.24-30,863.54

Finding the Fourth Proportional to 90,021.89, 135,049.24 and 30,863.54

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Solution

The fourth proportional to 90,021.89, 135,049.24 and 30,863.54 is: 46,300.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.89 : 135,049.24 = 30,863.54 : x
  2. Step 2: Convert to fraction form
    90,021.89/135,049.24 = 30,863.54/x
  3. Step 3: Cross multiply
    90,021.89x = 135,049.24 × 30,863.54
  4. Step 4: Simplify right side
    90,021.89x = 4,168,097,620.71
  5. Step 5: Solve for x
    x = 4,168,097,620.71/90,021.89
  6. Step 6: Final answer
    x = 46,300.93

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1.5x scale

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.