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Finding the Fourth Proportional to 49,390, 68,133.88 and 33,479.44

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Solution

The fourth proportional to 49,390, 68,133.88 and 33,479.44 is: 46,185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,390 : 68,133.88 = 33,479.44 : x
  2. Step 2: Convert to fraction form
    49,390/68,133.88 = 33,479.44/x
  3. Step 3: Cross multiply
    49,390x = 68,133.88 × 33,479.44
  4. Step 4: Simplify right side
    49,390x = 2,281,084,147.43
  5. Step 5: Solve for x
    x = 2,281,084,147.43/49,390
  6. Step 6: Final answer
    x = 46,185.14

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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.