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Finding the Fourth Proportional to 110,427, 165,640.50 and 27,321

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Solution

The fourth proportional to 110,427, 165,640.50 and 27,321 is: 40,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,427 : 165,640.50 = 27,321 : x
  2. Step 2: Convert to fraction form
    110,427/165,640.50 = 27,321/x
  3. Step 3: Cross multiply
    110,427x = 165,640.50 × 27,321
  4. Step 4: Simplify right side
    110,427x = 4,525,464,100.50
  5. Step 5: Solve for x
    x = 4,525,464,100.50/110,427
  6. Step 6: Final answer
    x = 40,981.50

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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.