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Finding the Fourth Proportional to 68,711.70, 103,067.55 and 33,719.70

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Solution

The fourth proportional to 68,711.70, 103,067.55 and 33,719.70 is: 50,579.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,711.70 : 103,067.55 = 33,719.70 : x
  2. Step 2: Convert to fraction form
    68,711.70/103,067.55 = 33,719.70/x
  3. Step 3: Cross multiply
    68,711.70x = 103,067.55 × 33,719.70
  4. Step 4: Simplify right side
    68,711.70x = 3,475,406,865.74
  5. Step 5: Solve for x
    x = 3,475,406,865.74/68,711.70
  6. Step 6: Final answer
    x = 50,579.55

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1.5x scale

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.