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Finding the Fourth Proportional to 66,820.88, 100,242.90 and 22,451.96

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Solution

The fourth proportional to 66,820.88, 100,242.90 and 22,451.96 is: 33,681.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,820.88 : 100,242.90 = 22,451.96 : x
  2. Step 2: Convert to fraction form
    66,820.88/100,242.90 = 22,451.96/x
  3. Step 3: Cross multiply
    66,820.88x = 100,242.90 × 22,451.96
  4. Step 4: Simplify right side
    66,820.88x = 2,250,649,581.08
  5. Step 5: Solve for x
    x = 2,250,649,581.08/66,820.88
  6. Step 6: Final answer
    x = 33,681.83

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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.