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Finding the Fourth Proportional to 66,690.56, 100,072.32 and 22,330.88

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Solution

The fourth proportional to 66,690.56, 100,072.32 and 22,330.88 is: 33,508.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,690.56 : 100,072.32 = 22,330.88 : x
  2. Step 2: Convert to fraction form
    66,690.56/100,072.32 = 22,330.88/x
  3. Step 3: Cross multiply
    66,690.56x = 100,072.32 × 22,330.88
  4. Step 4: Simplify right side
    66,690.56x = 2,234,702,969.24
  5. Step 5: Solve for x
    x = 2,234,702,969.24/66,690.56
  6. Step 6: Final answer
    x = 33,508.54

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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.