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Finding the Fourth Proportional to 68,796.55, 103,177.28 and 21,402.37

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Solution

The fourth proportional to 68,796.55, 103,177.28 and 21,402.37 is: 32,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,796.55 : 103,177.28 = 21,402.37 : x
  2. Step 2: Convert to fraction form
    68,796.55/103,177.28 = 21,402.37/x
  3. Step 3: Cross multiply
    68,796.55x = 103,177.28 × 21,402.37
  4. Step 4: Simplify right side
    68,796.55x = 2,208,238,215.14
  5. Step 5: Solve for x
    x = 2,208,238,215.14/68,796.55
  6. Step 6: Final answer
    x = 32,098.10

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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.