Home / 69,760,915.20-104,641,372.80-21,238,383.60

Finding the Fourth Proportional to 69,760,915.20, 104,641,372.80 and 21,238,383.60

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Solution

The fourth proportional to 69,760,915.20, 104,641,372.80 and 21,238,383.60 is: 31,857,575.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,760,915.20 : 104,641,372.80 = 21,238,383.60 : x
  2. Step 2: Convert to fraction form
    69,760,915.20/104,641,372.80 = 21,238,383.60/x
  3. Step 3: Cross multiply
    69,760,915.20x = 104,641,372.80 × 21,238,383.60
  4. Step 4: Simplify right side
    69,760,915.20x = 2,222,413,615,957,006.25
  5. Step 5: Solve for x
    x = 2,222,413,615,957,006.25/69,760,915.20
  6. Step 6: Final answer
    x = 31,857,575.40

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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.