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Finding the Fourth Proportional to 68,387.83, 102,571.48 and 21,634.63

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Solution

The fourth proportional to 68,387.83, 102,571.48 and 21,634.63 is: 32,448.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,387.83 : 102,571.48 = 21,634.63 : x
  2. Step 2: Convert to fraction form
    68,387.83/102,571.48 = 21,634.63/x
  3. Step 3: Cross multiply
    68,387.83x = 102,571.48 × 21,634.63
  4. Step 4: Simplify right side
    68,387.83x = 2,219,096,018.35
  5. Step 5: Solve for x
    x = 2,219,096,018.35/68,387.83
  6. Step 6: Final answer
    x = 32,448.70

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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.