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Finding the Fourth Proportional to 68,783.40, 102,956.40 and 49,100.40

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Solution

The fourth proportional to 68,783.40, 102,956.40 and 49,100.40 is: 73,494.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,783.40 : 102,956.40 = 49,100.40 : x
  2. Step 2: Convert to fraction form
    68,783.40/102,956.40 = 49,100.40/x
  3. Step 3: Cross multiply
    68,783.40x = 102,956.40 × 49,100.40
  4. Step 4: Simplify right side
    68,783.40x = 5,055,200,422.56
  5. Step 5: Solve for x
    x = 5,055,200,422.56/68,783.40
  6. Step 6: Final answer
    x = 73,494.48

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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.