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Finding the Third Proportional to 62,640 and 93,990

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Solution

The third proportional to 62,640 and 93,990 is: 141,030.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,640 : 93,990 = 93,990 : x
  2. Step 2: Convert to fraction form
    62,640/93,990 = 93,990/x
  3. Step 3: Cross multiply
    62,640x = 93,990 × 93,990
  4. Step 4: Simplify right side
    62,640x = 8,834,120,100
  5. Step 5: Solve for x
    x = 8,834,120,100/62,640
  6. Step 6: Final answer
    x = 141,030.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.