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Finding the Fourth Proportional to 74,188.71, 111,283.21 and 18,028.87

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Solution

The fourth proportional to 74,188.71, 111,283.21 and 18,028.87 is: 27,043.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,188.71 : 111,283.21 = 18,028.87 : x
  2. Step 2: Convert to fraction form
    74,188.71/111,283.21 = 18,028.87/x
  3. Step 3: Cross multiply
    74,188.71x = 111,283.21 × 18,028.87
  4. Step 4: Simplify right side
    74,188.71x = 2,006,310,436.13
  5. Step 5: Solve for x
    x = 2,006,310,436.13/74,188.71
  6. Step 6: Final answer
    x = 27,043.34

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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.