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Finding the Fourth Proportional to 38,448.60, 57,672.90 and 36,115.80

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Solution

The fourth proportional to 38,448.60, 57,672.90 and 36,115.80 is: 54,173.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,448.60 : 57,672.90 = 36,115.80 : x
  2. Step 2: Convert to fraction form
    38,448.60/57,672.90 = 36,115.80/x
  3. Step 3: Cross multiply
    38,448.60x = 57,672.90 × 36,115.80
  4. Step 4: Simplify right side
    38,448.60x = 2,082,902,921.82
  5. Step 5: Solve for x
    x = 2,082,902,921.82/38,448.60
  6. Step 6: Final answer
    x = 54,173.70

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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.