Home / 68,084.35-102,126.47-20,699.82

Finding the Fourth Proportional to 68,084.35, 102,126.47 and 20,699.82

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Solution

The fourth proportional to 68,084.35, 102,126.47 and 20,699.82 is: 31,049.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,084.35 : 102,126.47 = 20,699.82 : x
  2. Step 2: Convert to fraction form
    68,084.35/102,126.47 = 20,699.82/x
  3. Step 3: Cross multiply
    68,084.35x = 102,126.47 × 20,699.82
  4. Step 4: Simplify right side
    68,084.35x = 2,113,999,546.24
  5. Step 5: Solve for x
    x = 2,113,999,546.24/68,084.35
  6. Step 6: Final answer
    x = 31,049.71

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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.