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Finding the Third Proportional to 30,180.75 and 64,260

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Solution

The third proportional to 30,180.75 and 64,260 is: 136,820.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,180.75 : 64,260 = 64,260 : x
  2. Step 2: Convert to fraction form
    30,180.75/64,260 = 64,260/x
  3. Step 3: Cross multiply
    30,180.75x = 64,260 × 64,260
  4. Step 4: Simplify right side
    30,180.75x = 4,129,347,600
  5. Step 5: Solve for x
    x = 4,129,347,600/30,180.75
  6. Step 6: Final answer
    x = 136,820.58

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.