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Finding the Fourth Proportional to 68,456.80, 102,636.60 and 26,320.60

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Solution

The fourth proportional to 68,456.80, 102,636.60 and 26,320.60 is: 39,462.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,456.80 : 102,636.60 = 26,320.60 : x
  2. Step 2: Convert to fraction form
    68,456.80/102,636.60 = 26,320.60/x
  3. Step 3: Cross multiply
    68,456.80x = 102,636.60 × 26,320.60
  4. Step 4: Simplify right side
    68,456.80x = 2,701,456,893.96
  5. Step 5: Solve for x
    x = 2,701,456,893.96/68,456.80
  6. Step 6: Final answer
    x = 39,462.21

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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.