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Finding the Fourth Proportional to 81,198.01, 112,057.51 and 48,942.88

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Solution

The fourth proportional to 81,198.01, 112,057.51 and 48,942.88 is: 67,543.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,198.01 : 112,057.51 = 48,942.88 : x
  2. Step 2: Convert to fraction form
    81,198.01/112,057.51 = 48,942.88/x
  3. Step 3: Cross multiply
    81,198.01x = 112,057.51 × 48,942.88
  4. Step 4: Simplify right side
    81,198.01x = 5,484,417,791.10
  5. Step 5: Solve for x
    x = 5,484,417,791.10/81,198.01
  6. Step 6: Final answer
    x = 67,543.75

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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.