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Finding the Fourth Proportional to 81,452.97, 112,404.94 and 49,621.88

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Solution

The fourth proportional to 81,452.97, 112,404.94 and 49,621.88 is: 68,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,452.97 : 112,404.94 = 49,621.88 : x
  2. Step 2: Convert to fraction form
    81,452.97/112,404.94 = 49,621.88/x
  3. Step 3: Cross multiply
    81,452.97x = 112,404.94 × 49,621.88
  4. Step 4: Simplify right side
    81,452.97x = 5,577,744,601.04
  5. Step 5: Solve for x
    x = 5,577,744,601.04/81,452.97
  6. Step 6: Final answer
    x = 68,478.10

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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.