Home / 43,142.79-64,687.32-18,169.95

Finding the Fourth Proportional to 43,142.79, 64,687.32 and 18,169.95

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Solution

The fourth proportional to 43,142.79, 64,687.32 and 18,169.95 is: 27,243.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,142.79 : 64,687.32 = 18,169.95 : x
  2. Step 2: Convert to fraction form
    43,142.79/64,687.32 = 18,169.95/x
  3. Step 3: Cross multiply
    43,142.79x = 64,687.32 × 18,169.95
  4. Step 4: Simplify right side
    43,142.79x = 1,175,365,370.03
  5. Step 5: Solve for x
    x = 1,175,365,370.03/43,142.79
  6. Step 6: Final answer
    x = 27,243.61

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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.