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Finding the Third Proportional to 66,428.50 and 98,696.75

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Solution

The third proportional to 66,428.50 and 98,696.75 is: 146,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428.50 : 98,696.75 = 98,696.75 : x
  2. Step 2: Convert to fraction form
    66,428.50/98,696.75 = 98,696.75/x
  3. Step 3: Cross multiply
    66,428.50x = 98,696.75 × 98,696.75
  4. Step 4: Simplify right side
    66,428.50x = 9,741,048,460.56
  5. Step 5: Solve for x
    x = 9,741,048,460.56/66,428.50
  6. Step 6: Final answer
    x = 146,639.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.