Home / 68,120.08-102,093.60-30,640.12

Finding the Fourth Proportional to 68,120.08, 102,093.60 and 30,640.12

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Solution

The fourth proportional to 68,120.08, 102,093.60 and 30,640.12 is: 45,921.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,120.08 : 102,093.60 = 30,640.12 : x
  2. Step 2: Convert to fraction form
    68,120.08/102,093.60 = 30,640.12/x
  3. Step 3: Cross multiply
    68,120.08x = 102,093.60 × 30,640.12
  4. Step 4: Simplify right side
    68,120.08x = 3,128,160,155.23
  5. Step 5: Solve for x
    x = 3,128,160,155.23/68,120.08
  6. Step 6: Final answer
    x = 45,921.26

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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.