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Finding the Third Proportional to 40,215 and 87,342

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Solution

The third proportional to 40,215 and 87,342 is: 189,696.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,215 : 87,342 = 87,342 : x
  2. Step 2: Convert to fraction form
    40,215/87,342 = 87,342/x
  3. Step 3: Cross multiply
    40,215x = 87,342 × 87,342
  4. Step 4: Simplify right side
    40,215x = 7,628,624,964
  5. Step 5: Solve for x
    x = 7,628,624,964/40,215
  6. Step 6: Final answer
    x = 189,696.01

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.