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Finding the Third Proportional to 28,989.75 and 61,089.75

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Solution

The third proportional to 28,989.75 and 61,089.75 is: 128,733.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,989.75 : 61,089.75 = 61,089.75 : x
  2. Step 2: Convert to fraction form
    28,989.75/61,089.75 = 61,089.75/x
  3. Step 3: Cross multiply
    28,989.75x = 61,089.75 × 61,089.75
  4. Step 4: Simplify right side
    28,989.75x = 3,731,957,555.06
  5. Step 5: Solve for x
    x = 3,731,957,555.06/28,989.75
  6. Step 6: Final answer
    x = 128,733.69

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.