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Finding the Third Proportional to 28,138.50 and 66,422.53

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Solution

The third proportional to 28,138.50 and 66,422.53 is: 156,794.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,138.50 : 66,422.53 = 66,422.53 : x
  2. Step 2: Convert to fraction form
    28,138.50/66,422.53 = 66,422.53/x
  3. Step 3: Cross multiply
    28,138.50x = 66,422.53 × 66,422.53
  4. Step 4: Simplify right side
    28,138.50x = 4,411,952,657.66
  5. Step 5: Solve for x
    x = 4,411,952,657.66/28,138.50
  6. Step 6: Final answer
    x = 156,794.17

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.