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Finding the Fourth Proportional to 68,230.40, 102,499.20 and 65,619.20

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Solution

The fourth proportional to 68,230.40, 102,499.20 and 65,619.20 is: 98,576.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,230.40 : 102,499.20 = 65,619.20 : x
  2. Step 2: Convert to fraction form
    68,230.40/102,499.20 = 65,619.20/x
  3. Step 3: Cross multiply
    68,230.40x = 102,499.20 × 65,619.20
  4. Step 4: Simplify right side
    68,230.40x = 6,725,915,504.64
  5. Step 5: Solve for x
    x = 6,725,915,504.64/68,230.40
  6. Step 6: Final answer
    x = 98,576.52

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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.