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Finding the Fourth Proportional to 66,944.88, 100,366.56 and 40,642.56

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Solution

The fourth proportional to 66,944.88, 100,366.56 and 40,642.56 is: 60,933.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,944.88 : 100,366.56 = 40,642.56 : x
  2. Step 2: Convert to fraction form
    66,944.88/100,366.56 = 40,642.56/x
  3. Step 3: Cross multiply
    66,944.88x = 100,366.56 × 40,642.56
  4. Step 4: Simplify right side
    66,944.88x = 4,079,153,936.79
  5. Step 5: Solve for x
    x = 4,079,153,936.79/66,944.88
  6. Step 6: Final answer
    x = 60,933.02

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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.