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Finding the Third Proportional to 42,903 and 61,782.75

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Solution

The third proportional to 42,903 and 61,782.75 is: 88,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,903 : 61,782.75 = 61,782.75 : x
  2. Step 2: Convert to fraction form
    42,903/61,782.75 = 61,782.75/x
  3. Step 3: Cross multiply
    42,903x = 61,782.75 × 61,782.75
  4. Step 4: Simplify right side
    42,903x = 3,817,108,197.56
  5. Step 5: Solve for x
    x = 3,817,108,197.56/42,903
  6. Step 6: Final answer
    x = 88,970.66

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.