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Finding the Fourth Proportional to 32,562.80, 48,767.40 and 20,121.20

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Solution

The fourth proportional to 32,562.80, 48,767.40 and 20,121.20 is: 30,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,562.80 : 48,767.40 = 20,121.20 : x
  2. Step 2: Convert to fraction form
    32,562.80/48,767.40 = 20,121.20/x
  3. Step 3: Cross multiply
    32,562.80x = 48,767.40 × 20,121.20
  4. Step 4: Simplify right side
    32,562.80x = 981,258,608.88
  5. Step 5: Solve for x
    x = 981,258,608.88/32,562.80
  6. Step 6: Final answer
    x = 30,134.34

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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.