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Finding the Fourth Proportional to 38,145.60, 57,169.80 and 27,745.20

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Solution

The fourth proportional to 38,145.60, 57,169.80 and 27,745.20 is: 41,582.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,145.60 : 57,169.80 = 27,745.20 : x
  2. Step 2: Convert to fraction form
    38,145.60/57,169.80 = 27,745.20/x
  3. Step 3: Cross multiply
    38,145.60x = 57,169.80 × 27,745.20
  4. Step 4: Simplify right side
    38,145.60x = 1,586,187,534.96
  5. Step 5: Solve for x
    x = 1,586,187,534.96/38,145.60
  6. Step 6: Final answer
    x = 41,582.45

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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.