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Finding the Fourth Proportional to 39,851.91, 59,814.72 and 20,144.21

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Solution

The fourth proportional to 39,851.91, 59,814.72 and 20,144.21 is: 30,234.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,851.91 : 59,814.72 = 20,144.21 : x
  2. Step 2: Convert to fraction form
    39,851.91/59,814.72 = 20,144.21/x
  3. Step 3: Cross multiply
    39,851.91x = 59,814.72 × 20,144.21
  4. Step 4: Simplify right side
    39,851.91x = 1,204,919,981.70
  5. Step 5: Solve for x
    x = 1,204,919,981.70/39,851.91
  6. Step 6: Final answer
    x = 30,234.94

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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.