Home / 69,760,919.20-104,641,378.80-21,238,387.60

Finding the Fourth Proportional to 69,760,919.20, 104,641,378.80 and 21,238,387.60

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Solution

The fourth proportional to 69,760,919.20, 104,641,378.80 and 21,238,387.60 is: 31,857,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,760,919.20 : 104,641,378.80 = 21,238,387.60 : x
  2. Step 2: Convert to fraction form
    69,760,919.20/104,641,378.80 = 21,238,387.60/x
  3. Step 3: Cross multiply
    69,760,919.20x = 104,641,378.80 × 21,238,387.60
  4. Step 4: Simplify right side
    69,760,919.20x = 2,222,414,161,952,823
  5. Step 5: Solve for x
    x = 2,222,414,161,952,823/69,760,919.20
  6. Step 6: Final answer
    x = 31,857,581.40

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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.