Home / 69,823,905.42-104,738,805.96-20,639,871.25

Finding the Fourth Proportional to 69,823,905.42, 104,738,805.96 and 20,639,871.25

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Solution

The fourth proportional to 69,823,905.42, 104,738,805.96 and 20,639,871.25 is: 30,960,678.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,823,905.42 : 104,738,805.96 = 20,639,871.25 : x
  2. Step 2: Convert to fraction form
    69,823,905.42/104,738,805.96 = 20,639,871.25/x
  3. Step 3: Cross multiply
    69,823,905.42x = 104,738,805.96 × 20,639,871.25
  4. Step 4: Simplify right side
    69,823,905.42x = 2,161,795,469,669,882
  5. Step 5: Solve for x
    x = 2,161,795,469,669,882/69,823,905.42
  6. Step 6: Final answer
    x = 30,960,678.25

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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.