Home / 43,077.18-64,617.81-11,912.43

Finding the Fourth Proportional to 43,077.18, 64,617.81 and 11,912.43

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Solution

The fourth proportional to 43,077.18, 64,617.81 and 11,912.43 is: 17,869.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,077.18 : 64,617.81 = 11,912.43 : x
  2. Step 2: Convert to fraction form
    43,077.18/64,617.81 = 11,912.43/x
  3. Step 3: Cross multiply
    43,077.18x = 64,617.81 × 11,912.43
  4. Step 4: Simplify right side
    43,077.18x = 769,755,138.38
  5. Step 5: Solve for x
    x = 769,755,138.38/43,077.18
  6. Step 6: Final answer
    x = 17,869.21

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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.