Home / 42,165.20-63,196.60-18,766.80

Finding the Fourth Proportional to 42,165.20, 63,196.60 and 18,766.80

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Solution

The fourth proportional to 42,165.20, 63,196.60 and 18,766.80 is: 28,127.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,165.20 : 63,196.60 = 18,766.80 : x
  2. Step 2: Convert to fraction form
    42,165.20/63,196.60 = 18,766.80/x
  3. Step 3: Cross multiply
    42,165.20x = 63,196.60 × 18,766.80
  4. Step 4: Simplify right side
    42,165.20x = 1,185,997,952.88
  5. Step 5: Solve for x
    x = 1,185,997,952.88/42,165.20
  6. Step 6: Final answer
    x = 28,127.41

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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.