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Finding the Third Proportional to 30,348 and 45,072

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Solution

The third proportional to 30,348 and 45,072 is: 66,939.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,348 : 45,072 = 45,072 : x
  2. Step 2: Convert to fraction form
    30,348/45,072 = 45,072/x
  3. Step 3: Cross multiply
    30,348x = 45,072 × 45,072
  4. Step 4: Simplify right side
    30,348x = 2,031,485,184
  5. Step 5: Solve for x
    x = 2,031,485,184/30,348
  6. Step 6: Final answer
    x = 66,939.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.