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Finding the Fourth Proportional to 66,928.44, 100,360.37 and 38,855.57

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Solution

The fourth proportional to 66,928.44, 100,360.37 and 38,855.57 is: 58,264.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,928.44 : 100,360.37 = 38,855.57 : x
  2. Step 2: Convert to fraction form
    66,928.44/100,360.37 = 38,855.57/x
  3. Step 3: Cross multiply
    66,928.44x = 100,360.37 × 38,855.57
  4. Step 4: Simplify right side
    66,928.44x = 3,899,558,685.68
  5. Step 5: Solve for x
    x = 3,899,558,685.68/66,928.44
  6. Step 6: Final answer
    x = 58,264.60

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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.