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Finding the Fourth Proportional to 49,590, 68,440.44 and 30,729.96

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Solution

The fourth proportional to 49,590, 68,440.44 and 30,729.96 is: 42,411.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,590 : 68,440.44 = 30,729.96 : x
  2. Step 2: Convert to fraction form
    49,590/68,440.44 = 30,729.96/x
  3. Step 3: Cross multiply
    49,590x = 68,440.44 × 30,729.96
  4. Step 4: Simplify right side
    49,590x = 2,103,171,983.58
  5. Step 5: Solve for x
    x = 2,103,171,983.58/49,590
  6. Step 6: Final answer
    x = 42,411.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.