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Finding the Third Proportional to 28,221.75 and 66,862.13

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Solution

The third proportional to 28,221.75 and 66,862.13 is: 158,407.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.75 : 66,862.13 = 66,862.13 : x
  2. Step 2: Convert to fraction form
    28,221.75/66,862.13 = 66,862.13/x
  3. Step 3: Cross multiply
    28,221.75x = 66,862.13 × 66,862.13
  4. Step 4: Simplify right side
    28,221.75x = 4,470,543,759.52
  5. Step 5: Solve for x
    x = 4,470,543,759.52/28,221.75
  6. Step 6: Final answer
    x = 158,407.74

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.