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Finding the Third Proportional to 66,203.63 and 85,003.88

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Solution

The third proportional to 66,203.63 and 85,003.88 is: 109,142.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203.63 : 85,003.88 = 85,003.88 : x
  2. Step 2: Convert to fraction form
    66,203.63/85,003.88 = 85,003.88/x
  3. Step 3: Cross multiply
    66,203.63x = 85,003.88 × 85,003.88
  4. Step 4: Simplify right side
    66,203.63x = 7,225,658,765.02
  5. Step 5: Solve for x
    x = 7,225,658,765.02/66,203.63
  6. Step 6: Final answer
    x = 109,142.95

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.