Home / 66,842.72-92,234.17-39,975.42

Finding the Fourth Proportional to 66,842.72, 92,234.17 and 39,975.42

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Solution

The fourth proportional to 66,842.72, 92,234.17 and 39,975.42 is: 55,160.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,842.72 : 92,234.17 = 39,975.42 : x
  2. Step 2: Convert to fraction form
    66,842.72/92,234.17 = 39,975.42/x
  3. Step 3: Cross multiply
    66,842.72x = 92,234.17 × 39,975.42
  4. Step 4: Simplify right side
    66,842.72x = 3,687,099,584.16
  5. Step 5: Solve for x
    x = 3,687,099,584.16/66,842.72
  6. Step 6: Final answer
    x = 55,160.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.