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Finding the Third Proportional to 40,574 and 87,390

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Solution

The third proportional to 40,574 and 87,390 is: 188,224.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,574 : 87,390 = 87,390 : x
  2. Step 2: Convert to fraction form
    40,574/87,390 = 87,390/x
  3. Step 3: Cross multiply
    40,574x = 87,390 × 87,390
  4. Step 4: Simplify right side
    40,574x = 7,637,012,100
  5. Step 5: Solve for x
    x = 7,637,012,100/40,574
  6. Step 6: Final answer
    x = 188,224.28

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.