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Finding the Fourth Proportional to 68,902.65, 95,079.83 and 38,685.60

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Solution

The fourth proportional to 68,902.65, 95,079.83 and 38,685.60 is: 53,382.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,902.65 : 95,079.83 = 38,685.60 : x
  2. Step 2: Convert to fraction form
    68,902.65/95,079.83 = 38,685.60/x
  3. Step 3: Cross multiply
    68,902.65x = 95,079.83 × 38,685.60
  4. Step 4: Simplify right side
    68,902.65x = 3,678,220,078.02
  5. Step 5: Solve for x
    x = 3,678,220,078.02/68,902.65
  6. Step 6: Final answer
    x = 53,382.85

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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.