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Finding the Third Proportional to 28,128.94 and 66,400.59

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Solution

The third proportional to 28,128.94 and 66,400.59 is: 156,743.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.94 : 66,400.59 = 66,400.59 : x
  2. Step 2: Convert to fraction form
    28,128.94/66,400.59 = 66,400.59/x
  3. Step 3: Cross multiply
    28,128.94x = 66,400.59 × 66,400.59
  4. Step 4: Simplify right side
    28,128.94x = 4,409,038,850.35
  5. Step 5: Solve for x
    x = 4,409,038,850.35/28,128.94
  6. Step 6: Final answer
    x = 156,743.88

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.