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Finding the Fourth Proportional to 76,867.66, 115,193.10 and 36,297.88

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Solution

The fourth proportional to 76,867.66, 115,193.10 and 36,297.88 is: 54,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,867.66 : 115,193.10 = 36,297.88 : x
  2. Step 2: Convert to fraction form
    76,867.66/115,193.10 = 36,297.88/x
  3. Step 3: Cross multiply
    76,867.66x = 115,193.10 × 36,297.88
  4. Step 4: Simplify right side
    76,867.66x = 4,181,265,320.63
  5. Step 5: Solve for x
    x = 4,181,265,320.63/76,867.66
  6. Step 6: Final answer
    x = 54,395.64

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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.