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Finding the Third Proportional to 30,712 and 65,792

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Solution

The third proportional to 30,712 and 65,792 is: 140,941.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,712 : 65,792 = 65,792 : x
  2. Step 2: Convert to fraction form
    30,712/65,792 = 65,792/x
  3. Step 3: Cross multiply
    30,712x = 65,792 × 65,792
  4. Step 4: Simplify right side
    30,712x = 4,328,587,264
  5. Step 5: Solve for x
    x = 4,328,587,264/30,712
  6. Step 6: Final answer
    x = 140,941.24

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.