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Finding the Third Proportional to 30,342.50 and 45,278.75

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Solution

The third proportional to 30,342.50 and 45,278.75 is: 67,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,342.50 : 45,278.75 = 45,278.75 : x
  2. Step 2: Convert to fraction form
    30,342.50/45,278.75 = 45,278.75/x
  3. Step 3: Cross multiply
    30,342.50x = 45,278.75 × 45,278.75
  4. Step 4: Simplify right side
    30,342.50x = 2,050,165,201.56
  5. Step 5: Solve for x
    x = 2,050,165,201.56/30,342.50
  6. Step 6: Final answer
    x = 67,567.45

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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.