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Finding the Third Proportional to 30,921.75 and 51,860.25

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Solution

The third proportional to 30,921.75 and 51,860.25 is: 86,977.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,921.75 : 51,860.25 = 51,860.25 : x
  2. Step 2: Convert to fraction form
    30,921.75/51,860.25 = 51,860.25/x
  3. Step 3: Cross multiply
    30,921.75x = 51,860.25 × 51,860.25
  4. Step 4: Simplify right side
    30,921.75x = 2,689,485,530.06
  5. Step 5: Solve for x
    x = 2,689,485,530.06/30,921.75
  6. Step 6: Final answer
    x = 86,977.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.68) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.