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Finding the Third Proportional to 45,090 and 69,810.75

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Solution

The third proportional to 45,090 and 69,810.75 is: 108,084.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,090 : 69,810.75 = 69,810.75 : x
  2. Step 2: Convert to fraction form
    45,090/69,810.75 = 69,810.75/x
  3. Step 3: Cross multiply
    45,090x = 69,810.75 × 69,810.75
  4. Step 4: Simplify right side
    45,090x = 4,873,540,815.56
  5. Step 5: Solve for x
    x = 4,873,540,815.56/45,090
  6. Step 6: Final answer
    x = 108,084.74

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.