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Finding the Fourth Proportional to 81,737.76, 122,605.85 and 48,433.85

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Solution

The fourth proportional to 81,737.76, 122,605.85 and 48,433.85 is: 72,650.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,737.76 : 122,605.85 = 48,433.85 : x
  2. Step 2: Convert to fraction form
    81,737.76/122,605.85 = 48,433.85/x
  3. Step 3: Cross multiply
    81,737.76x = 122,605.85 × 48,433.85
  4. Step 4: Simplify right side
    81,737.76x = 5,938,273,315.85
  5. Step 5: Solve for x
    x = 5,938,273,315.85/81,737.76
  6. Step 6: Final answer
    x = 72,650.31

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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.