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Finding the Third Proportional to 28,170 and 43,315.50

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Solution

The third proportional to 28,170 and 43,315.50 is: 66,603.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,170 : 43,315.50 = 43,315.50 : x
  2. Step 2: Convert to fraction form
    28,170/43,315.50 = 43,315.50/x
  3. Step 3: Cross multiply
    28,170x = 43,315.50 × 43,315.50
  4. Step 4: Simplify right side
    28,170x = 1,876,232,540.25
  5. Step 5: Solve for x
    x = 1,876,232,540.25/28,170
  6. Step 6: Final answer
    x = 66,603.92

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.