Home / 68,971.20-95,198.40-40,686

Finding the Fourth Proportional to 68,971.20, 95,198.40 and 40,686

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Solution

The fourth proportional to 68,971.20, 95,198.40 and 40,686 is: 56,157.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,971.20 : 95,198.40 = 40,686 : x
  2. Step 2: Convert to fraction form
    68,971.20/95,198.40 = 40,686/x
  3. Step 3: Cross multiply
    68,971.20x = 95,198.40 × 40,686
  4. Step 4: Simplify right side
    68,971.20x = 3,873,242,102.40
  5. Step 5: Solve for x
    x = 3,873,242,102.40/68,971.20
  6. Step 6: Final answer
    x = 56,157.38

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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.