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Finding the Third Proportional to 30,189 and 40,237.50

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Solution

The third proportional to 30,189 and 40,237.50 is: 53,630.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,189 : 40,237.50 = 40,237.50 : x
  2. Step 2: Convert to fraction form
    30,189/40,237.50 = 40,237.50/x
  3. Step 3: Cross multiply
    30,189x = 40,237.50 × 40,237.50
  4. Step 4: Simplify right side
    30,189x = 1,619,056,406.25
  5. Step 5: Solve for x
    x = 1,619,056,406.25/30,189
  6. Step 6: Final answer
    x = 53,630.67

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.