Home / 39,742,795,747.75-54,845,228,644.20-21,678,705,625.05

Finding the Fourth Proportional to 39,742,795,747.75, 54,845,228,644.20 and 21,678,705,625.05

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Solution

The fourth proportional to 39,742,795,747.75, 54,845,228,644.20 and 21,678,705,625.05 is: 29,916,706,772.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,742,795,747.75 : 54,845,228,644.20 = 21,678,705,625.05 : x
  2. Step 2: Convert to fraction form
    39,742,795,747.75/54,845,228,644.20 = 21,678,705,625.05/x
  3. Step 3: Cross multiply
    39,742,795,747.75x = 54,845,228,644.20 × 21,678,705,625.05
  4. Step 4: Simplify right side
    39,742,795,747.75x = 1,188,973,566,716,171,780,096
  5. Step 5: Solve for x
    x = 1,188,973,566,716,171,780,096/39,742,795,747.75
  6. Step 6: Final answer
    x = 29,916,706,772.78

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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.