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Finding the Fourth Proportional to 68,677.38, 102,922.38 and 42,032.61

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Solution

The fourth proportional to 68,677.38, 102,922.38 and 42,032.61 is: 62,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,677.38 : 102,922.38 = 42,032.61 : x
  2. Step 2: Convert to fraction form
    68,677.38/102,922.38 = 42,032.61/x
  3. Step 3: Cross multiply
    68,677.38x = 102,922.38 × 42,032.61
  4. Step 4: Simplify right side
    68,677.38x = 4,326,096,258.81
  5. Step 5: Solve for x
    x = 4,326,096,258.81/68,677.38
  6. Step 6: Final answer
    x = 62,991.57

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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.