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Finding the Third Proportional to 48,120 and 69,315

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Solution

The third proportional to 48,120 and 69,315 is: 99,845.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,120 : 69,315 = 69,315 : x
  2. Step 2: Convert to fraction form
    48,120/69,315 = 69,315/x
  3. Step 3: Cross multiply
    48,120x = 69,315 × 69,315
  4. Step 4: Simplify right side
    48,120x = 4,804,569,225
  5. Step 5: Solve for x
    x = 4,804,569,225/48,120
  6. Step 6: Final answer
    x = 99,845.58

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.