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Finding the Third Proportional to 31,515 and 48,798

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Solution

The third proportional to 31,515 and 48,798 is: 75,559.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,515 : 48,798 = 48,798 : x
  2. Step 2: Convert to fraction form
    31,515/48,798 = 48,798/x
  3. Step 3: Cross multiply
    31,515x = 48,798 × 48,798
  4. Step 4: Simplify right side
    31,515x = 2,381,244,804
  5. Step 5: Solve for x
    x = 2,381,244,804/31,515
  6. Step 6: Final answer
    x = 75,559.09

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.