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Finding the Fourth Proportional to 68,262.66, 102,407.55 and 20,884.41

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Solution

The fourth proportional to 68,262.66, 102,407.55 and 20,884.41 is: 31,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,262.66 : 102,407.55 = 20,884.41 : x
  2. Step 2: Convert to fraction form
    68,262.66/102,407.55 = 20,884.41/x
  3. Step 3: Cross multiply
    68,262.66x = 102,407.55 × 20,884.41
  4. Step 4: Simplify right side
    68,262.66x = 2,138,721,261.30
  5. Step 5: Solve for x
    x = 2,138,721,261.30/68,262.66
  6. Step 6: Final answer
    x = 31,330.76

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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.