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Finding the Fourth Proportional to 68,801, 103,218.84 and 19,553

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Solution

The fourth proportional to 68,801, 103,218.84 and 19,553 is: 29,334.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,801 : 103,218.84 = 19,553 : x
  2. Step 2: Convert to fraction form
    68,801/103,218.84 = 19,553/x
  3. Step 3: Cross multiply
    68,801x = 103,218.84 × 19,553
  4. Step 4: Simplify right side
    68,801x = 2,018,237,978.52
  5. Step 5: Solve for x
    x = 2,018,237,978.52/68,801
  6. Step 6: Final answer
    x = 29,334.43

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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.