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Finding the Fourth Proportional to 67,299, 92,872.62 and 39,021.09

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Solution

The fourth proportional to 67,299, 92,872.62 and 39,021.09 is: 53,849.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,299 : 92,872.62 = 39,021.09 : x
  2. Step 2: Convert to fraction form
    67,299/92,872.62 = 39,021.09/x
  3. Step 3: Cross multiply
    67,299x = 92,872.62 × 39,021.09
  4. Step 4: Simplify right side
    67,299x = 3,623,990,863.56
  5. Step 5: Solve for x
    x = 3,623,990,863.56/67,299
  6. Step 6: Final answer
    x = 53,849.10

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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.