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Finding the Third Proportional to 28,154 and 61,897

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Solution

The third proportional to 28,154 and 61,897 is: 136,081.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154 : 61,897 = 61,897 : x
  2. Step 2: Convert to fraction form
    28,154/61,897 = 61,897/x
  3. Step 3: Cross multiply
    28,154x = 61,897 × 61,897
  4. Step 4: Simplify right side
    28,154x = 3,831,238,609
  5. Step 5: Solve for x
    x = 3,831,238,609/28,154
  6. Step 6: Final answer
    x = 136,081.50

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.