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Finding the Fourth Proportional to 38,376,791.84, 52,959,978.24 and 21,858,455.36

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Solution

The fourth proportional to 38,376,791.84, 52,959,978.24 and 21,858,455.36 is: 30,164,671.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,376,791.84 : 52,959,978.24 = 21,858,455.36 : x
  2. Step 2: Convert to fraction form
    38,376,791.84/52,959,978.24 = 21,858,455.36/x
  3. Step 3: Cross multiply
    38,376,791.84x = 52,959,978.24 × 21,858,455.36
  4. Step 4: Simplify right side
    38,376,791.84x = 1,157,623,320,225,611.50
  5. Step 5: Solve for x
    x = 1,157,623,320,225,611.50/38,376,791.84
  6. Step 6: Final answer
    x = 30,164,671.53

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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.