Home / 54,105.30-81,157.02-20,832.60

Finding the Fourth Proportional to 54,105.30, 81,157.02 and 20,832.60

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Solution

The fourth proportional to 54,105.30, 81,157.02 and 20,832.60 is: 31,248.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,105.30 : 81,157.02 = 20,832.60 : x
  2. Step 2: Convert to fraction form
    54,105.30/81,157.02 = 20,832.60/x
  3. Step 3: Cross multiply
    54,105.30x = 81,157.02 × 20,832.60
  4. Step 4: Simplify right side
    54,105.30x = 1,690,711,734.85
  5. Step 5: Solve for x
    x = 1,690,711,734.85/54,105.30
  6. Step 6: Final answer
    x = 31,248.54

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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.