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Finding the Third Proportional to 36,000 and 78,550

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Solution

The third proportional to 36,000 and 78,550 is: 171,391.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,000 : 78,550 = 78,550 : x
  2. Step 2: Convert to fraction form
    36,000/78,550 = 78,550/x
  3. Step 3: Cross multiply
    36,000x = 78,550 × 78,550
  4. Step 4: Simplify right side
    36,000x = 6,170,102,500
  5. Step 5: Solve for x
    x = 6,170,102,500/36,000
  6. Step 6: Final answer
    x = 171,391.74

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.