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Finding the Fourth Proportional to 69,500.11, 103,356.07 and 67,285.78

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Solution

The fourth proportional to 69,500.11, 103,356.07 and 67,285.78 is: 100,063.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,500.11 : 103,356.07 = 67,285.78 : x
  2. Step 2: Convert to fraction form
    69,500.11/103,356.07 = 67,285.78/x
  3. Step 3: Cross multiply
    69,500.11x = 103,356.07 × 67,285.78
  4. Step 4: Simplify right side
    69,500.11x = 6,954,393,787.68
  5. Step 5: Solve for x
    x = 6,954,393,787.68/69,500.11
  6. Step 6: Final answer
    x = 100,063.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.