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Finding the Fourth Proportional to 68,245, 102,353.40 and 18,313.24

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Solution

The fourth proportional to 68,245, 102,353.40 and 18,313.24 is: 27,466.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,245 : 102,353.40 = 18,313.24 : x
  2. Step 2: Convert to fraction form
    68,245/102,353.40 = 18,313.24/x
  3. Step 3: Cross multiply
    68,245x = 102,353.40 × 18,313.24
  4. Step 4: Simplify right side
    68,245x = 1,874,422,379.02
  5. Step 5: Solve for x
    x = 1,874,422,379.02/68,245
  6. Step 6: Final answer
    x = 27,466.08

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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.