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Finding the Fourth Proportional to 68,230.40, 102,345.60 and 65,168.60

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Solution

The fourth proportional to 68,230.40, 102,345.60 and 65,168.60 is: 97,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,230.40 : 102,345.60 = 65,168.60 : x
  2. Step 2: Convert to fraction form
    68,230.40/102,345.60 = 65,168.60/x
  3. Step 3: Cross multiply
    68,230.40x = 102,345.60 × 65,168.60
  4. Step 4: Simplify right side
    68,230.40x = 6,669,719,468.16
  5. Step 5: Solve for x
    x = 6,669,719,468.16/68,230.40
  6. Step 6: Final answer
    x = 97,752.90

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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.