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Finding the Fourth Proportional to 66,769.32, 100,141.20 and 20,022.18

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Solution

The fourth proportional to 66,769.32, 100,141.20 and 20,022.18 is: 30,029.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,769.32 : 100,141.20 = 20,022.18 : x
  2. Step 2: Convert to fraction form
    66,769.32/100,141.20 = 20,022.18/x
  3. Step 3: Cross multiply
    66,769.32x = 100,141.20 × 20,022.18
  4. Step 4: Simplify right side
    66,769.32x = 2,005,045,131.82
  5. Step 5: Solve for x
    x = 2,005,045,131.82/66,769.32
  6. Step 6: Final answer
    x = 30,029.44

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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.