Home / 53,785.18-80,674.68-20,508.60

Finding the Fourth Proportional to 53,785.18, 80,674.68 and 20,508.60

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Solution

The fourth proportional to 53,785.18, 80,674.68 and 20,508.60 is: 30,761.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,785.18 : 80,674.68 = 20,508.60 : x
  2. Step 2: Convert to fraction form
    53,785.18/80,674.68 = 20,508.60/x
  3. Step 3: Cross multiply
    53,785.18x = 80,674.68 × 20,508.60
  4. Step 4: Simplify right side
    53,785.18x = 1,654,524,742.25
  5. Step 5: Solve for x
    x = 1,654,524,742.25/53,785.18
  6. Step 6: Final answer
    x = 30,761.72

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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.