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Finding the Fourth Proportional to 71,813.90, 107,737.94 and 36,187.68

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Solution

The fourth proportional to 71,813.90, 107,737.94 and 36,187.68 is: 54,290.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,813.90 : 107,737.94 = 36,187.68 : x
  2. Step 2: Convert to fraction form
    71,813.90/107,737.94 = 36,187.68/x
  3. Step 3: Cross multiply
    71,813.90x = 107,737.94 × 36,187.68
  4. Step 4: Simplify right side
    71,813.90x = 3,898,786,096.58
  5. Step 5: Solve for x
    x = 3,898,786,096.58/71,813.90
  6. Step 6: Final answer
    x = 54,290.13

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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.