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Finding the Third Proportional to 30,219.75 and 45,312.75

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Solution

The third proportional to 30,219.75 and 45,312.75 is: 67,943.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,219.75 : 45,312.75 = 45,312.75 : x
  2. Step 2: Convert to fraction form
    30,219.75/45,312.75 = 45,312.75/x
  3. Step 3: Cross multiply
    30,219.75x = 45,312.75 × 45,312.75
  4. Step 4: Simplify right side
    30,219.75x = 2,053,245,312.56
  5. Step 5: Solve for x
    x = 2,053,245,312.56/30,219.75
  6. Step 6: Final answer
    x = 67,943.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.