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Finding the Fourth Proportional to 49,997.70, 68,997.60 and 28,492.20

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Solution

The fourth proportional to 49,997.70, 68,997.60 and 28,492.20 is: 39,319.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,997.70 : 68,997.60 = 28,492.20 : x
  2. Step 2: Convert to fraction form
    49,997.70/68,997.60 = 28,492.20/x
  3. Step 3: Cross multiply
    49,997.70x = 68,997.60 × 28,492.20
  4. Step 4: Simplify right side
    49,997.70x = 1,965,893,418.72
  5. Step 5: Solve for x
    x = 1,965,893,418.72/49,997.70
  6. Step 6: Final answer
    x = 39,319.68

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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.