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Finding the Fourth Proportional to 79,251.66, 109,378.47 and 49,046.71

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Solution

The fourth proportional to 79,251.66, 109,378.47 and 49,046.71 is: 67,691.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,251.66 : 109,378.47 = 49,046.71 : x
  2. Step 2: Convert to fraction form
    79,251.66/109,378.47 = 49,046.71/x
  3. Step 3: Cross multiply
    79,251.66x = 109,378.47 × 49,046.71
  4. Step 4: Simplify right side
    79,251.66x = 5,364,653,803.73
  5. Step 5: Solve for x
    x = 5,364,653,803.73/79,251.66
  6. Step 6: Final answer
    x = 67,691.38

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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.