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Finding the Third Proportional to 55,649.50 and 85,315

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Solution

The third proportional to 55,649.50 and 85,315 is: 130,794.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,649.50 : 85,315 = 85,315 : x
  2. Step 2: Convert to fraction form
    55,649.50/85,315 = 85,315/x
  3. Step 3: Cross multiply
    55,649.50x = 85,315 × 85,315
  4. Step 4: Simplify right side
    55,649.50x = 7,278,649,225
  5. Step 5: Solve for x
    x = 7,278,649,225/55,649.50
  6. Step 6: Final answer
    x = 130,794.51

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.