Home / 68,642.68-102,999.33-51,997.18

Finding the Fourth Proportional to 68,642.68, 102,999.33 and 51,997.18

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Solution

The fourth proportional to 68,642.68, 102,999.33 and 51,997.18 is: 78,022.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,642.68 : 102,999.33 = 51,997.18 : x
  2. Step 2: Convert to fraction form
    68,642.68/102,999.33 = 51,997.18/x
  3. Step 3: Cross multiply
    68,642.68x = 102,999.33 × 51,997.18
  4. Step 4: Simplify right side
    68,642.68x = 5,355,674,701.89
  5. Step 5: Solve for x
    x = 5,355,674,701.89/68,642.68
  6. Step 6: Final answer
    x = 78,022.52

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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.