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Finding the Third Proportional to 28,395 and 39,712.50

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Solution

The third proportional to 28,395 and 39,712.50 is: 55,540.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,395 : 39,712.50 = 39,712.50 : x
  2. Step 2: Convert to fraction form
    28,395/39,712.50 = 39,712.50/x
  3. Step 3: Cross multiply
    28,395x = 39,712.50 × 39,712.50
  4. Step 4: Simplify right side
    28,395x = 1,577,082,656.25
  5. Step 5: Solve for x
    x = 1,577,082,656.25/28,395
  6. Step 6: Final answer
    x = 55,540.86

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.