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Finding the Fourth Proportional to 66,679.45, 100,019.25 and 27,236.56

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Solution

The fourth proportional to 66,679.45, 100,019.25 and 27,236.56 is: 40,854.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,679.45 : 100,019.25 = 27,236.56 : x
  2. Step 2: Convert to fraction form
    66,679.45/100,019.25 = 27,236.56/x
  3. Step 3: Cross multiply
    66,679.45x = 100,019.25 × 27,236.56
  4. Step 4: Simplify right side
    66,679.45x = 2,724,180,303.78
  5. Step 5: Solve for x
    x = 2,724,180,303.78/66,679.45
  6. Step 6: Final answer
    x = 40,854.87

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1.5x scale

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.