Home / 69,405,815.20-104,087,760.30-20,870,784.88

Finding the Fourth Proportional to 69,405,815.20, 104,087,760.30 and 20,870,784.88

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Solution

The fourth proportional to 69,405,815.20, 104,087,760.30 and 20,870,784.88 is: 31,299,873.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,405,815.20 : 104,087,760.30 = 20,870,784.88 : x
  2. Step 2: Convert to fraction form
    69,405,815.20/104,087,760.30 = 20,870,784.88/x
  3. Step 3: Cross multiply
    69,405,815.20x = 104,087,760.30 × 20,870,784.88
  4. Step 4: Simplify right side
    69,405,815.20x = 2,172,393,253,862,304
  5. Step 5: Solve for x
    x = 2,172,393,253,862,304/69,405,815.20
  6. Step 6: Final answer
    x = 31,299,873.76

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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.