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Finding the Fourth Proportional to 66,690.59, 100,063.96 and 29,231.33

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Solution

The fourth proportional to 66,690.59, 100,063.96 and 29,231.33 is: 43,859.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,690.59 : 100,063.96 = 29,231.33 : x
  2. Step 2: Convert to fraction form
    66,690.59/100,063.96 = 29,231.33/x
  3. Step 3: Cross multiply
    66,690.59x = 100,063.96 × 29,231.33
  4. Step 4: Simplify right side
    66,690.59x = 2,925,002,062.47
  5. Step 5: Solve for x
    x = 2,925,002,062.47/66,690.59
  6. Step 6: Final answer
    x = 43,859.30

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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.