Home / 38,765,110.78-53,496,211.66-21,362,078.80

Finding the Fourth Proportional to 38,765,110.78, 53,496,211.66 and 21,362,078.80

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Solution

The fourth proportional to 38,765,110.78, 53,496,211.66 and 21,362,078.80 is: 29,479,866.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,765,110.78 : 53,496,211.66 = 21,362,078.80 : x
  2. Step 2: Convert to fraction form
    38,765,110.78/53,496,211.66 = 21,362,078.80/x
  3. Step 3: Cross multiply
    38,765,110.78x = 53,496,211.66 × 21,362,078.80
  4. Step 4: Simplify right side
    38,765,110.78x = 1,142,790,288,982,398.75
  5. Step 5: Solve for x
    x = 1,142,790,288,982,398.75/38,765,110.78
  6. Step 6: Final answer
    x = 29,479,866.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.