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Finding the Fourth Proportional to 68,459.39, 102,700.76 and 30,522.42

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Solution

The fourth proportional to 68,459.39, 102,700.76 and 30,522.42 is: 45,788.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,459.39 : 102,700.76 = 30,522.42 : x
  2. Step 2: Convert to fraction form
    68,459.39/102,700.76 = 30,522.42/x
  3. Step 3: Cross multiply
    68,459.39x = 102,700.76 × 30,522.42
  4. Step 4: Simplify right side
    68,459.39x = 3,134,675,578.43
  5. Step 5: Solve for x
    x = 3,134,675,578.43/68,459.39
  6. Step 6: Final answer
    x = 45,788.84

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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.