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Finding the Third Proportional to 67,080 and 90,777.75

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Solution

The third proportional to 67,080 and 90,777.75 is: 122,847.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,080 : 90,777.75 = 90,777.75 : x
  2. Step 2: Convert to fraction form
    67,080/90,777.75 = 90,777.75/x
  3. Step 3: Cross multiply
    67,080x = 90,777.75 × 90,777.75
  4. Step 4: Simplify right side
    67,080x = 8,240,599,895.06
  5. Step 5: Solve for x
    x = 8,240,599,895.06/67,080
  6. Step 6: Final answer
    x = 122,847.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.