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Finding the Fourth Proportional to 68,785.62, 103,045.23 and 40,253.55

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Solution

The fourth proportional to 68,785.62, 103,045.23 and 40,253.55 is: 60,302.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,785.62 : 103,045.23 = 40,253.55 : x
  2. Step 2: Convert to fraction form
    68,785.62/103,045.23 = 40,253.55/x
  3. Step 3: Cross multiply
    68,785.62x = 103,045.23 × 40,253.55
  4. Step 4: Simplify right side
    68,785.62x = 4,147,936,318.07
  5. Step 5: Solve for x
    x = 4,147,936,318.07/68,785.62
  6. Step 6: Final answer
    x = 60,302.38

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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.