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Finding the Third Proportional to 19,987.75 and 43,000.75

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Solution

The third proportional to 19,987.75 and 43,000.75 is: 92,509.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.75 : 43,000.75 = 43,000.75 : x
  2. Step 2: Convert to fraction form
    19,987.75/43,000.75 = 43,000.75/x
  3. Step 3: Cross multiply
    19,987.75x = 43,000.75 × 43,000.75
  4. Step 4: Simplify right side
    19,987.75x = 1,849,064,500.56
  5. Step 5: Solve for x
    x = 1,849,064,500.56/19,987.75
  6. Step 6: Final answer
    x = 92,509.89

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.