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Finding the Fourth Proportional to 68,602.35, 102,911.09 and 21,844.47

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Solution

The fourth proportional to 68,602.35, 102,911.09 and 21,844.47 is: 32,769.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,602.35 : 102,911.09 = 21,844.47 : x
  2. Step 2: Convert to fraction form
    68,602.35/102,911.09 = 21,844.47/x
  3. Step 3: Cross multiply
    68,602.35x = 102,911.09 × 21,844.47
  4. Step 4: Simplify right side
    68,602.35x = 2,248,038,108.95
  5. Step 5: Solve for x
    x = 2,248,038,108.95/68,602.35
  6. Step 6: Final answer
    x = 32,769.11

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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.