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Finding the Fourth Proportional to 38,687, 57,940.50 and 37,622.80

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Solution

The fourth proportional to 38,687, 57,940.50 and 37,622.80 is: 56,346.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,687 : 57,940.50 = 37,622.80 : x
  2. Step 2: Convert to fraction form
    38,687/57,940.50 = 37,622.80/x
  3. Step 3: Cross multiply
    38,687x = 57,940.50 × 37,622.80
  4. Step 4: Simplify right side
    38,687x = 2,179,883,843.40
  5. Step 5: Solve for x
    x = 2,179,883,843.40/38,687
  6. Step 6: Final answer
    x = 56,346.68

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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.