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Finding the Fourth Proportional to 90,015.80, 135,020.13 and 23,456.48

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Solution

The fourth proportional to 90,015.80, 135,020.13 and 23,456.48 is: 35,183.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,015.80 : 135,020.13 = 23,456.48 : x
  2. Step 2: Convert to fraction form
    90,015.80/135,020.13 = 23,456.48/x
  3. Step 3: Cross multiply
    90,015.80x = 135,020.13 × 23,456.48
  4. Step 4: Simplify right side
    90,015.80x = 3,167,096,303.84
  5. Step 5: Solve for x
    x = 3,167,096,303.84/90,015.80
  6. Step 6: Final answer
    x = 35,183.78

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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.