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Finding the Fourth Proportional to 68,061.74, 102,092.60 and 21,318.26

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Solution

The fourth proportional to 68,061.74, 102,092.60 and 21,318.26 is: 31,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,061.74 : 102,092.60 = 21,318.26 : x
  2. Step 2: Convert to fraction form
    68,061.74/102,092.60 = 21,318.26/x
  3. Step 3: Cross multiply
    68,061.74x = 102,092.60 × 21,318.26
  4. Step 4: Simplify right side
    68,061.74x = 2,176,436,590.88
  5. Step 5: Solve for x
    x = 2,176,436,590.88/68,061.74
  6. Step 6: Final answer
    x = 31,977.39

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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.