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Finding the Fourth Proportional to 98,104.79, 135,380.62 and 55,662.41

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Solution

The fourth proportional to 98,104.79, 135,380.62 and 55,662.41 is: 76,811.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,104.79 : 135,380.62 = 55,662.41 : x
  2. Step 2: Convert to fraction form
    98,104.79/135,380.62 = 55,662.41/x
  3. Step 3: Cross multiply
    98,104.79x = 135,380.62 × 55,662.41
  4. Step 4: Simplify right side
    98,104.79x = 7,535,611,576.49
  5. Step 5: Solve for x
    x = 7,535,611,576.49/98,104.79
  6. Step 6: Final answer
    x = 76,811.86

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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.