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Finding the Third Proportional to 28,618 and 62,420

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Solution

The third proportional to 28,618 and 62,420 is: 136,147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618 : 62,420 = 62,420 : x
  2. Step 2: Convert to fraction form
    28,618/62,420 = 62,420/x
  3. Step 3: Cross multiply
    28,618x = 62,420 × 62,420
  4. Step 4: Simplify right side
    28,618x = 3,896,256,400
  5. Step 5: Solve for x
    x = 3,896,256,400/28,618
  6. Step 6: Final answer
    x = 136,147.05

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.