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Finding the Fourth Proportional to 84,656.71, 126,974.69 and 49,137.38

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Solution

The fourth proportional to 84,656.71, 126,974.69 and 49,137.38 is: 73,700.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,656.71 : 126,974.69 = 49,137.38 : x
  2. Step 2: Convert to fraction form
    84,656.71/126,974.69 = 49,137.38/x
  3. Step 3: Cross multiply
    84,656.71x = 126,974.69 × 49,137.38
  4. Step 4: Simplify right side
    84,656.71x = 6,239,204,087.00
  5. Step 5: Solve for x
    x = 6,239,204,087.00/84,656.71
  6. Step 6: Final answer
    x = 73,700.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.