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Finding the Third Proportional to 28,638.56 and 62,880.75

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Solution

The third proportional to 28,638.56 and 62,880.75 is: 138,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.56 : 62,880.75 = 62,880.75 : x
  2. Step 2: Convert to fraction form
    28,638.56/62,880.75 = 62,880.75/x
  3. Step 3: Cross multiply
    28,638.56x = 62,880.75 × 62,880.75
  4. Step 4: Simplify right side
    28,638.56x = 3,953,988,720.56
  5. Step 5: Solve for x
    x = 3,953,988,720.56/28,638.56
  6. Step 6: Final answer
    x = 138,065.20

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.