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Finding the Fourth Proportional to 45,062.80, 67,632.60 and 20,141.20

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Solution

The fourth proportional to 45,062.80, 67,632.60 and 20,141.20 is: 30,228.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,062.80 : 67,632.60 = 20,141.20 : x
  2. Step 2: Convert to fraction form
    45,062.80/67,632.60 = 20,141.20/x
  3. Step 3: Cross multiply
    45,062.80x = 67,632.60 × 20,141.20
  4. Step 4: Simplify right side
    45,062.80x = 1,362,201,723.12
  5. Step 5: Solve for x
    x = 1,362,201,723.12/45,062.80
  6. Step 6: Final answer
    x = 30,228.96

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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.