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Finding the Third Proportional to 45,330 and 74,913.75

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Solution

The third proportional to 45,330 and 74,913.75 is: 123,804.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,330 : 74,913.75 = 74,913.75 : x
  2. Step 2: Convert to fraction form
    45,330/74,913.75 = 74,913.75/x
  3. Step 3: Cross multiply
    45,330x = 74,913.75 × 74,913.75
  4. Step 4: Simplify right side
    45,330x = 5,612,069,939.06
  5. Step 5: Solve for x
    x = 5,612,069,939.06/45,330
  6. Step 6: Final answer
    x = 123,804.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.