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Finding the Fourth Proportional to 66,716.56, 100,086.96 and 31,655.88

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Solution

The fourth proportional to 66,716.56, 100,086.96 and 31,655.88 is: 47,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,716.56 : 100,086.96 = 31,655.88 : x
  2. Step 2: Convert to fraction form
    66,716.56/100,086.96 = 31,655.88/x
  3. Step 3: Cross multiply
    66,716.56x = 100,086.96 × 31,655.88
  4. Step 4: Simplify right side
    66,716.56x = 3,168,340,795.32
  5. Step 5: Solve for x
    x = 3,168,340,795.32/66,716.56
  6. Step 6: Final answer
    x = 47,489.57

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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.