Home / 68,730.21-103,072.25-30,755.69

Finding the Fourth Proportional to 68,730.21, 103,072.25 and 30,755.69

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Solution

The fourth proportional to 68,730.21, 103,072.25 and 30,755.69 is: 46,123.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,730.21 : 103,072.25 = 30,755.69 : x
  2. Step 2: Convert to fraction form
    68,730.21/103,072.25 = 30,755.69/x
  3. Step 3: Cross multiply
    68,730.21x = 103,072.25 × 30,755.69
  4. Step 4: Simplify right side
    68,730.21x = 3,170,057,730.13
  5. Step 5: Solve for x
    x = 3,170,057,730.13/68,730.21
  6. Step 6: Final answer
    x = 46,123.21

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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.