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Finding the Third Proportional to 27,823.50 and 42,777

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Solution

The third proportional to 27,823.50 and 42,777 is: 65,767.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,823.50 : 42,777 = 42,777 : x
  2. Step 2: Convert to fraction form
    27,823.50/42,777 = 42,777/x
  3. Step 3: Cross multiply
    27,823.50x = 42,777 × 42,777
  4. Step 4: Simplify right side
    27,823.50x = 1,829,871,729
  5. Step 5: Solve for x
    x = 1,829,871,729/27,823.50
  6. Step 6: Final answer
    x = 65,767.13

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.