Home / 57,865.70-86,805.54-20,418.09

Finding the Fourth Proportional to 57,865.70, 86,805.54 and 20,418.09

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Solution

The fourth proportional to 57,865.70, 86,805.54 and 20,418.09 is: 30,629.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,865.70 : 86,805.54 = 20,418.09 : x
  2. Step 2: Convert to fraction form
    57,865.70/86,805.54 = 20,418.09/x
  3. Step 3: Cross multiply
    57,865.70x = 86,805.54 × 20,418.09
  4. Step 4: Simplify right side
    57,865.70x = 1,772,403,002.70
  5. Step 5: Solve for x
    x = 1,772,403,002.70/57,865.70
  6. Step 6: Final answer
    x = 30,629.59

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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.