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Finding the Fourth Proportional to 67,070.25, 100,620.92 and 19,683.41

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Solution

The fourth proportional to 67,070.25, 100,620.92 and 19,683.41 is: 29,529.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,070.25 : 100,620.92 = 19,683.41 : x
  2. Step 2: Convert to fraction form
    67,070.25/100,620.92 = 19,683.41/x
  3. Step 3: Cross multiply
    67,070.25x = 100,620.92 × 19,683.41
  4. Step 4: Simplify right side
    67,070.25x = 1,980,562,369.04
  5. Step 5: Solve for x
    x = 1,980,562,369.04/67,070.25
  6. Step 6: Final answer
    x = 29,529.67

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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.