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Finding the Third Proportional to 30,129.75 and 66,003.75

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Solution

The third proportional to 30,129.75 and 66,003.75 is: 144,591.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.75 : 66,003.75 = 66,003.75 : x
  2. Step 2: Convert to fraction form
    30,129.75/66,003.75 = 66,003.75/x
  3. Step 3: Cross multiply
    30,129.75x = 66,003.75 × 66,003.75
  4. Step 4: Simplify right side
    30,129.75x = 4,356,495,014.06
  5. Step 5: Solve for x
    x = 4,356,495,014.06/30,129.75
  6. Step 6: Final answer
    x = 144,591.14

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.