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Finding the Fourth Proportional to 68,753.70, 102,660.19 and 61,591.70

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Solution

The fourth proportional to 68,753.70, 102,660.19 and 61,591.70 is: 91,966.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,753.70 : 102,660.19 = 61,591.70 : x
  2. Step 2: Convert to fraction form
    68,753.70/102,660.19 = 61,591.70/x
  3. Step 3: Cross multiply
    68,753.70x = 102,660.19 × 61,591.70
  4. Step 4: Simplify right side
    68,753.70x = 6,323,015,727.09
  5. Step 5: Solve for x
    x = 6,323,015,727.09/68,753.70
  6. Step 6: Final answer
    x = 91,966.19

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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.