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Finding the Fourth Proportional to 74,094, 111,141 and 18,690

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Solution

The fourth proportional to 74,094, 111,141 and 18,690 is: 28,035

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,094 : 111,141 = 18,690 : x
  2. Step 2: Convert to fraction form
    74,094/111,141 = 18,690/x
  3. Step 3: Cross multiply
    74,094x = 111,141 × 18,690
  4. Step 4: Simplify right side
    74,094x = 2,077,225,290
  5. Step 5: Solve for x
    x = 2,077,225,290/74,094
  6. Step 6: Final answer
    x = 28,035

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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.