Home / 43,076.90-64,616.58-11,912.15

Finding the Fourth Proportional to 43,076.90, 64,616.58 and 11,912.15

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Solution

The fourth proportional to 43,076.90, 64,616.58 and 11,912.15 is: 17,868.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,076.90 : 64,616.58 = 11,912.15 : x
  2. Step 2: Convert to fraction form
    43,076.90/64,616.58 = 11,912.15/x
  3. Step 3: Cross multiply
    43,076.90x = 64,616.58 × 11,912.15
  4. Step 4: Simplify right side
    43,076.90x = 769,722,554.99
  5. Step 5: Solve for x
    x = 769,722,554.99/43,076.90
  6. Step 6: Final answer
    x = 17,868.57

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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.