Home / 57,805.42-86,715.07-20,357.75

Finding the Fourth Proportional to 57,805.42, 86,715.07 and 20,357.75

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Solution

The fourth proportional to 57,805.42, 86,715.07 and 20,357.75 is: 30,539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,805.42 : 86,715.07 = 20,357.75 : x
  2. Step 2: Convert to fraction form
    57,805.42/86,715.07 = 20,357.75/x
  3. Step 3: Cross multiply
    57,805.42x = 86,715.07 × 20,357.75
  4. Step 4: Simplify right side
    57,805.42x = 1,765,323,716.29
  5. Step 5: Solve for x
    x = 1,765,323,716.29/57,805.42
  6. Step 6: Final answer
    x = 30,539.07

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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.