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Finding the Fourth Proportional to 66,735.44, 100,099.65 and 16,815.50

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Solution

The fourth proportional to 66,735.44, 100,099.65 and 16,815.50 is: 25,222.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,735.44 : 100,099.65 = 16,815.50 : x
  2. Step 2: Convert to fraction form
    66,735.44/100,099.65 = 16,815.50/x
  3. Step 3: Cross multiply
    66,735.44x = 100,099.65 × 16,815.50
  4. Step 4: Simplify right side
    66,735.44x = 1,683,225,664.58
  5. Step 5: Solve for x
    x = 1,683,225,664.58/66,735.44
  6. Step 6: Final answer
    x = 25,222.37

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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.