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Finding the Fourth Proportional to 39,763, 59,644.86 and 12,061

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Solution

The fourth proportional to 39,763, 59,644.86 and 12,061 is: 18,091.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,763 : 59,644.86 = 12,061 : x
  2. Step 2: Convert to fraction form
    39,763/59,644.86 = 12,061/x
  3. Step 3: Cross multiply
    39,763x = 59,644.86 × 12,061
  4. Step 4: Simplify right side
    39,763x = 719,376,656.46
  5. Step 5: Solve for x
    x = 719,376,656.46/39,763
  6. Step 6: Final answer
    x = 18,091.61

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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.