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Finding the Third Proportional to 68,826.75 and 145,915.50

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Solution

The third proportional to 68,826.75 and 145,915.50 is: 309,346.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,826.75 : 145,915.50 = 145,915.50 : x
  2. Step 2: Convert to fraction form
    68,826.75/145,915.50 = 145,915.50/x
  3. Step 3: Cross multiply
    68,826.75x = 145,915.50 × 145,915.50
  4. Step 4: Simplify right side
    68,826.75x = 21,291,333,140.25
  5. Step 5: Solve for x
    x = 21,291,333,140.25/68,826.75
  6. Step 6: Final answer
    x = 309,346.77

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.