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Finding the Third Proportional to 19,120 and 40,560

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Solution

The third proportional to 19,120 and 40,560 is: 86,041.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,120 : 40,560 = 40,560 : x
  2. Step 2: Convert to fraction form
    19,120/40,560 = 40,560/x
  3. Step 3: Cross multiply
    19,120x = 40,560 × 40,560
  4. Step 4: Simplify right side
    19,120x = 1,645,113,600
  5. Step 5: Solve for x
    x = 1,645,113,600/19,120
  6. Step 6: Final answer
    x = 86,041.51

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.