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Finding the Fourth Proportional to 68,026.33, 102,039.72 and 20,641.82

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Solution

The fourth proportional to 68,026.33, 102,039.72 and 20,641.82 is: 30,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,026.33 : 102,039.72 = 20,641.82 : x
  2. Step 2: Convert to fraction form
    68,026.33/102,039.72 = 20,641.82/x
  3. Step 3: Cross multiply
    68,026.33x = 102,039.72 × 20,641.82
  4. Step 4: Simplify right side
    68,026.33x = 2,106,285,519.46
  5. Step 5: Solve for x
    x = 2,106,285,519.46/68,026.33
  6. Step 6: Final answer
    x = 30,962.80

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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.