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Finding the Fourth Proportional to 90,025.91, 134,993.87 and 30,033.50

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Solution

The fourth proportional to 90,025.91, 134,993.87 and 30,033.50 is: 45,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,025.91 : 134,993.87 = 30,033.50 : x
  2. Step 2: Convert to fraction form
    90,025.91/134,993.87 = 30,033.50/x
  3. Step 3: Cross multiply
    90,025.91x = 134,993.87 × 30,033.50
  4. Step 4: Simplify right side
    90,025.91x = 4,054,338,610.41
  5. Step 5: Solve for x
    x = 4,054,338,610.41/90,025.91
  6. Step 6: Final answer
    x = 45,035.24

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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.