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Finding the Fourth Proportional to 68,102.40, 102,326.40 and 60,499.20

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Solution

The fourth proportional to 68,102.40, 102,326.40 and 60,499.20 is: 90,902.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,102.40 : 102,326.40 = 60,499.20 : x
  2. Step 2: Convert to fraction form
    68,102.40/102,326.40 = 60,499.20/x
  3. Step 3: Cross multiply
    68,102.40x = 102,326.40 × 60,499.20
  4. Step 4: Simplify right side
    68,102.40x = 6,190,665,338.88
  5. Step 5: Solve for x
    x = 6,190,665,338.88/68,102.40
  6. Step 6: Final answer
    x = 90,902.31

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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.