Home / 57,805.35-86,714.97-20,357.68

Finding the Fourth Proportional to 57,805.35, 86,714.97 and 20,357.68

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Solution

The fourth proportional to 57,805.35, 86,714.97 and 20,357.68 is: 30,538.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,805.35 : 86,714.97 = 20,357.68 : x
  2. Step 2: Convert to fraction form
    57,805.35/86,714.97 = 20,357.68/x
  3. Step 3: Cross multiply
    57,805.35x = 86,714.97 × 20,357.68
  4. Step 4: Simplify right side
    57,805.35x = 1,765,315,610.47
  5. Step 5: Solve for x
    x = 1,765,315,610.47/57,805.35
  6. Step 6: Final answer
    x = 30,538.97

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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.