Home / 70,662.18-105,996.92-18,072.12

Finding the Fourth Proportional to 70,662.18, 105,996.92 and 18,072.12

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Solution

The fourth proportional to 70,662.18, 105,996.92 and 18,072.12 is: 27,109.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,662.18 : 105,996.92 = 18,072.12 : x
  2. Step 2: Convert to fraction form
    70,662.18/105,996.92 = 18,072.12/x
  3. Step 3: Cross multiply
    70,662.18x = 105,996.92 × 18,072.12
  4. Step 4: Simplify right side
    70,662.18x = 1,915,589,057.87
  5. Step 5: Solve for x
    x = 1,915,589,057.87/70,662.18
  6. Step 6: Final answer
    x = 27,109.11

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1.5x scale

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.