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Finding the Fourth Proportional to 101,286.46, 139,781.88 and 55,964.44

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Solution

The fourth proportional to 101,286.46, 139,781.88 and 55,964.44 is: 77,234.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,286.46 : 139,781.88 = 55,964.44 : x
  2. Step 2: Convert to fraction form
    101,286.46/139,781.88 = 55,964.44/x
  3. Step 3: Cross multiply
    101,286.46x = 139,781.88 × 55,964.44
  4. Step 4: Simplify right side
    101,286.46x = 7,822,814,636.35
  5. Step 5: Solve for x
    x = 7,822,814,636.35/101,286.46
  6. Step 6: Final answer
    x = 77,234.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.