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Finding the Third Proportional to 27,840 and 62,688

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Solution

The third proportional to 27,840 and 62,688 is: 141,156.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,840 : 62,688 = 62,688 : x
  2. Step 2: Convert to fraction form
    27,840/62,688 = 62,688/x
  3. Step 3: Cross multiply
    27,840x = 62,688 × 62,688
  4. Step 4: Simplify right side
    27,840x = 3,929,785,344
  5. Step 5: Solve for x
    x = 3,929,785,344/27,840
  6. Step 6: Final answer
    x = 141,156.08

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.