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Finding the Fourth Proportional to 38,909.42, 57,994 and 36,694.88

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Solution

The fourth proportional to 38,909.42, 57,994 and 36,694.88 is: 54,693.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,909.42 : 57,994 = 36,694.88 : x
  2. Step 2: Convert to fraction form
    38,909.42/57,994 = 36,694.88/x
  3. Step 3: Cross multiply
    38,909.42x = 57,994 × 36,694.88
  4. Step 4: Simplify right side
    38,909.42x = 2,128,082,870.72
  5. Step 5: Solve for x
    x = 2,128,082,870.72/38,909.42
  6. Step 6: Final answer
    x = 54,693.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.