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Finding the Third Proportional to 25,490 and 55,905

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Solution

The third proportional to 25,490 and 55,905 is: 122,611.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,490 : 55,905 = 55,905 : x
  2. Step 2: Convert to fraction form
    25,490/55,905 = 55,905/x
  3. Step 3: Cross multiply
    25,490x = 55,905 × 55,905
  4. Step 4: Simplify right side
    25,490x = 3,125,369,025
  5. Step 5: Solve for x
    x = 3,125,369,025/25,490
  6. Step 6: Final answer
    x = 122,611.57

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.