Home / 69,343,628.45-104,012,919.99-20,820,221.10

Finding the Fourth Proportional to 69,343,628.45, 104,012,919.99 and 20,820,221.10

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Solution

The fourth proportional to 69,343,628.45, 104,012,919.99 and 20,820,221.10 is: 31,229,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,343,628.45 : 104,012,919.99 = 20,820,221.10 : x
  2. Step 2: Convert to fraction form
    69,343,628.45/104,012,919.99 = 20,820,221.10/x
  3. Step 3: Cross multiply
    69,343,628.45x = 104,012,919.99 × 20,820,221.10
  4. Step 4: Simplify right side
    69,343,628.45x = 2,165,571,991,448,409.75
  5. Step 5: Solve for x
    x = 2,165,571,991,448,409.75/69,343,628.45
  6. Step 6: Final answer
    x = 31,229,574.22

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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.