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Finding the Third Proportional to 28,621.13 and 43,781.63

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Solution

The third proportional to 28,621.13 and 43,781.63 is: 66,972.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,621.13 : 43,781.63 = 43,781.63 : x
  2. Step 2: Convert to fraction form
    28,621.13/43,781.63 = 43,781.63/x
  3. Step 3: Cross multiply
    28,621.13x = 43,781.63 × 43,781.63
  4. Step 4: Simplify right side
    28,621.13x = 1,916,830,687.64
  5. Step 5: Solve for x
    x = 1,916,830,687.64/28,621.13
  6. Step 6: Final answer
    x = 66,972.58

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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.