Home / 68,719.15-103,546.78-56,512.54

Finding the Fourth Proportional to 68,719.15, 103,546.78 and 56,512.54

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Solution

The fourth proportional to 68,719.15, 103,546.78 and 56,512.54 is: 85,153.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,719.15 : 103,546.78 = 56,512.54 : x
  2. Step 2: Convert to fraction form
    68,719.15/103,546.78 = 56,512.54/x
  3. Step 3: Cross multiply
    68,719.15x = 103,546.78 × 56,512.54
  4. Step 4: Simplify right side
    68,719.15x = 5,851,691,546.62
  5. Step 5: Solve for x
    x = 5,851,691,546.62/68,719.15
  6. Step 6: Final answer
    x = 85,153.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.