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Finding the Fourth Proportional to 79,198.68, 109,285.71 and 45,203.94

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Solution

The fourth proportional to 79,198.68, 109,285.71 and 45,203.94 is: 62,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,198.68 : 109,285.71 = 45,203.94 : x
  2. Step 2: Convert to fraction form
    79,198.68/109,285.71 = 45,203.94/x
  3. Step 3: Cross multiply
    79,198.68x = 109,285.71 × 45,203.94
  4. Step 4: Simplify right side
    79,198.68x = 4,940,144,677.70
  5. Step 5: Solve for x
    x = 4,940,144,677.70/79,198.68
  6. Step 6: Final answer
    x = 62,376.60

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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.