Home / 53,785.28-80,687.28-20,508.32

Finding the Fourth Proportional to 53,785.28, 80,687.28 and 20,508.32

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Solution

The fourth proportional to 53,785.28, 80,687.28 and 20,508.32 is: 30,766.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,785.28 : 80,687.28 = 20,508.32 : x
  2. Step 2: Convert to fraction form
    53,785.28/80,687.28 = 20,508.32/x
  3. Step 3: Cross multiply
    53,785.28x = 80,687.28 × 20,508.32
  4. Step 4: Simplify right side
    53,785.28x = 1,654,760,558.17
  5. Step 5: Solve for x
    x = 1,654,760,558.17/53,785.28
  6. Step 6: Final answer
    x = 30,766.05

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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.