Home / 38,420,786.58-53,021,942.19-21,900,611.40

Finding the Fourth Proportional to 38,420,786.58, 53,021,942.19 and 21,900,611.40

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Solution

The fourth proportional to 38,420,786.58, 53,021,942.19 and 21,900,611.40 is: 30,223,560.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420,786.58 : 53,021,942.19 = 21,900,611.40 : x
  2. Step 2: Convert to fraction form
    38,420,786.58/53,021,942.19 = 21,900,611.40/x
  3. Step 3: Cross multiply
    38,420,786.58x = 53,021,942.19 × 21,900,611.40
  4. Step 4: Simplify right side
    38,420,786.58x = 1,161,212,951,576,454.75
  5. Step 5: Solve for x
    x = 1,161,212,951,576,454.75/38,420,786.58
  6. Step 6: Final answer
    x = 30,223,560.08

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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.