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Finding the Fourth Proportional to 66,832.65, 100,270.04 and 40,207.75

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Solution

The fourth proportional to 66,832.65, 100,270.04 and 40,207.75 is: 60,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,832.65 : 100,270.04 = 40,207.75 : x
  2. Step 2: Convert to fraction form
    66,832.65/100,270.04 = 40,207.75/x
  3. Step 3: Cross multiply
    66,832.65x = 100,270.04 × 40,207.75
  4. Step 4: Simplify right side
    66,832.65x = 4,031,632,700.81
  5. Step 5: Solve for x
    x = 4,031,632,700.81/66,832.65
  6. Step 6: Final answer
    x = 60,324.30

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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.