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Finding the Fourth Proportional to 68,243.80, 102,365.70 and 62,714.20

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Solution

The fourth proportional to 68,243.80, 102,365.70 and 62,714.20 is: 94,071.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,243.80 : 102,365.70 = 62,714.20 : x
  2. Step 2: Convert to fraction form
    68,243.80/102,365.70 = 62,714.20/x
  3. Step 3: Cross multiply
    68,243.80x = 102,365.70 × 62,714.20
  4. Step 4: Simplify right side
    68,243.80x = 6,419,782,982.94
  5. Step 5: Solve for x
    x = 6,419,782,982.94/68,243.80
  6. Step 6: Final answer
    x = 94,071.30

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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.