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Finding the Fourth Proportional to 68,612.59, 102,897.01 and 21,854.53

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Solution

The fourth proportional to 68,612.59, 102,897.01 and 21,854.53 is: 32,774.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,612.59 : 102,897.01 = 21,854.53 : x
  2. Step 2: Convert to fraction form
    68,612.59/102,897.01 = 21,854.53/x
  3. Step 3: Cross multiply
    68,612.59x = 102,897.01 × 21,854.53
  4. Step 4: Simplify right side
    68,612.59x = 2,248,765,791.96
  5. Step 5: Solve for x
    x = 2,248,765,791.96/68,612.59
  6. Step 6: Final answer
    x = 32,774.83

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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.