Home / 68,115.07-102,189.89-21,368.35

Finding the Fourth Proportional to 68,115.07, 102,189.89 and 21,368.35

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Solution

The fourth proportional to 68,115.07, 102,189.89 and 21,368.35 is: 32,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,115.07 : 102,189.89 = 21,368.35 : x
  2. Step 2: Convert to fraction form
    68,115.07/102,189.89 = 21,368.35/x
  3. Step 3: Cross multiply
    68,115.07x = 102,189.89 × 21,368.35
  4. Step 4: Simplify right side
    68,115.07x = 2,183,629,335.98
  5. Step 5: Solve for x
    x = 2,183,629,335.98/68,115.07
  6. Step 6: Final answer
    x = 32,057.95

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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.