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Finding the Third Proportional to 39,386 and 85,684

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Solution

The third proportional to 39,386 and 85,684 is: 186,405.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386 : 85,684 = 85,684 : x
  2. Step 2: Convert to fraction form
    39,386/85,684 = 85,684/x
  3. Step 3: Cross multiply
    39,386x = 85,684 × 85,684
  4. Step 4: Simplify right side
    39,386x = 7,341,747,856
  5. Step 5: Solve for x
    x = 7,341,747,856/39,386
  6. Step 6: Final answer
    x = 186,405.01

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.