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Finding the Fourth Proportional to 68,116.40, 102,174.60 and 36,623.60

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Solution

The fourth proportional to 68,116.40, 102,174.60 and 36,623.60 is: 54,935.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,116.40 : 102,174.60 = 36,623.60 : x
  2. Step 2: Convert to fraction form
    68,116.40/102,174.60 = 36,623.60/x
  3. Step 3: Cross multiply
    68,116.40x = 102,174.60 × 36,623.60
  4. Step 4: Simplify right side
    68,116.40x = 3,742,001,680.56
  5. Step 5: Solve for x
    x = 3,742,001,680.56/68,116.40
  6. Step 6: Final answer
    x = 54,935.40

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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.