Home / 69,405,816.20-104,087,761.80-20,870,785.88

Finding the Fourth Proportional to 69,405,816.20, 104,087,761.80 and 20,870,785.88

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Solution

The fourth proportional to 69,405,816.20, 104,087,761.80 and 20,870,785.88 is: 31,299,875.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,405,816.20 : 104,087,761.80 = 20,870,785.88 : x
  2. Step 2: Convert to fraction form
    69,405,816.20/104,087,761.80 = 20,870,785.88/x
  3. Step 3: Cross multiply
    69,405,816.20x = 104,087,761.80 × 20,870,785.88
  4. Step 4: Simplify right side
    69,405,816.20x = 2,172,393,389,256,243.25
  5. Step 5: Solve for x
    x = 2,172,393,389,256,243.25/69,405,816.20
  6. Step 6: Final answer
    x = 31,299,875.26

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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.