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Finding the Fourth Proportional to 49,992.96, 68,996.10 and 28,490.49

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Solution

The fourth proportional to 49,992.96, 68,996.10 and 28,490.49 is: 39,320.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,992.96 : 68,996.10 = 28,490.49 : x
  2. Step 2: Convert to fraction form
    49,992.96/68,996.10 = 28,490.49/x
  3. Step 3: Cross multiply
    49,992.96x = 68,996.10 × 28,490.49
  4. Step 4: Simplify right side
    49,992.96x = 1,965,732,697.09
  5. Step 5: Solve for x
    x = 1,965,732,697.09/49,992.96
  6. Step 6: Final answer
    x = 39,320.19

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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.