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Finding the Third Proportional to 28,645.21 and 61,678.65

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Solution

The third proportional to 28,645.21 and 61,678.65 is: 132,806.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.21 : 61,678.65 = 61,678.65 : x
  2. Step 2: Convert to fraction form
    28,645.21/61,678.65 = 61,678.65/x
  3. Step 3: Cross multiply
    28,645.21x = 61,678.65 × 61,678.65
  4. Step 4: Simplify right side
    28,645.21x = 3,804,256,154.94
  5. Step 5: Solve for x
    x = 3,804,256,154.94/28,645.21
  6. Step 6: Final answer
    x = 132,806.03

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.