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Finding the Fourth Proportional to 68,459.05, 102,700.25 and 30,522.09

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Solution

The fourth proportional to 68,459.05, 102,700.25 and 30,522.09 is: 45,788.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,459.05 : 102,700.25 = 30,522.09 : x
  2. Step 2: Convert to fraction form
    68,459.05/102,700.25 = 30,522.09/x
  3. Step 3: Cross multiply
    68,459.05x = 102,700.25 × 30,522.09
  4. Step 4: Simplify right side
    68,459.05x = 3,134,625,760.02
  5. Step 5: Solve for x
    x = 3,134,625,760.02/68,459.05
  6. Step 6: Final answer
    x = 45,788.33

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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.