Home / 42,163.20-63,193.60-18,764.80

Finding the Fourth Proportional to 42,163.20, 63,193.60 and 18,764.80

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Solution

The fourth proportional to 42,163.20, 63,193.60 and 18,764.80 is: 28,124.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,163.20 : 63,193.60 = 18,764.80 : x
  2. Step 2: Convert to fraction form
    42,163.20/63,193.60 = 18,764.80/x
  3. Step 3: Cross multiply
    42,163.20x = 63,193.60 × 18,764.80
  4. Step 4: Simplify right side
    42,163.20x = 1,185,815,265.28
  5. Step 5: Solve for x
    x = 1,185,815,265.28/42,163.20
  6. Step 6: Final answer
    x = 28,124.41

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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.