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Finding the Fourth Proportional to 68,661.54, 102,871.18 and 60,132.88

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Solution

The fourth proportional to 68,661.54, 102,871.18 and 60,132.88 is: 90,093.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,661.54 : 102,871.18 = 60,132.88 : x
  2. Step 2: Convert to fraction form
    68,661.54/102,871.18 = 60,132.88/x
  3. Step 3: Cross multiply
    68,661.54x = 102,871.18 × 60,132.88
  4. Step 4: Simplify right side
    68,661.54x = 6,185,940,322.40
  5. Step 5: Solve for x
    x = 6,185,940,322.40/68,661.54
  6. Step 6: Final answer
    x = 90,093.24

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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.