Home / 68,422.12-102,623.26-18,505.12

Finding the Fourth Proportional to 68,422.12, 102,623.26 and 18,505.12

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Solution

The fourth proportional to 68,422.12, 102,623.26 and 18,505.12 is: 27,755.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,422.12 : 102,623.26 = 18,505.12 : x
  2. Step 2: Convert to fraction form
    68,422.12/102,623.26 = 18,505.12/x
  3. Step 3: Cross multiply
    68,422.12x = 102,623.26 × 18,505.12
  4. Step 4: Simplify right side
    68,422.12x = 1,899,055,741.09
  5. Step 5: Solve for x
    x = 1,899,055,741.09/68,422.12
  6. Step 6: Final answer
    x = 27,755.00

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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.