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Finding the Fourth Proportional to 68,760.45, 102,670.25 and 61,598.43

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Solution

The fourth proportional to 68,760.45, 102,670.25 and 61,598.43 is: 91,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,760.45 : 102,670.25 = 61,598.43 : x
  2. Step 2: Convert to fraction form
    68,760.45/102,670.25 = 61,598.43/x
  3. Step 3: Cross multiply
    68,760.45x = 102,670.25 × 61,598.43
  4. Step 4: Simplify right side
    68,760.45x = 6,324,325,899.72
  5. Step 5: Solve for x
    x = 6,324,325,899.72/68,760.45
  6. Step 6: Final answer
    x = 91,976.21

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.