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Finding the Fourth Proportional to 70,987.77, 106,236 and 43,958.88

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Solution

The fourth proportional to 70,987.77, 106,236 and 43,958.88 is: 65,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,987.77 : 106,236 = 43,958.88 : x
  2. Step 2: Convert to fraction form
    70,987.77/106,236 = 43,958.88/x
  3. Step 3: Cross multiply
    70,987.77x = 106,236 × 43,958.88
  4. Step 4: Simplify right side
    70,987.77x = 4,670,015,575.68
  5. Step 5: Solve for x
    x = 4,670,015,575.68/70,987.77
  6. Step 6: Final answer
    x = 65,786.20

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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.