Home / 69,405,860.79-104,087,828.73-20,870,830.47

Finding the Fourth Proportional to 69,405,860.79, 104,087,828.73 and 20,870,830.47

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Solution

The fourth proportional to 69,405,860.79, 104,087,828.73 and 20,870,830.47 is: 31,299,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,405,860.79 : 104,087,828.73 = 20,870,830.47 : x
  2. Step 2: Convert to fraction form
    69,405,860.79/104,087,828.73 = 20,870,830.47/x
  3. Step 3: Cross multiply
    69,405,860.79x = 104,087,828.73 × 20,870,830.47
  4. Step 4: Simplify right side
    69,405,860.79x = 2,172,399,427,414,225.25
  5. Step 5: Solve for x
    x = 2,172,399,427,414,225.25/69,405,860.79
  6. Step 6: Final answer
    x = 31,299,942.15

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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.