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Finding the Third Proportional to 80,445.50 and 105,785.75

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Solution

The third proportional to 80,445.50 and 105,785.75 is: 139,108.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,445.50 : 105,785.75 = 105,785.75 : x
  2. Step 2: Convert to fraction form
    80,445.50/105,785.75 = 105,785.75/x
  3. Step 3: Cross multiply
    80,445.50x = 105,785.75 × 105,785.75
  4. Step 4: Simplify right side
    80,445.50x = 11,190,624,903.06
  5. Step 5: Solve for x
    x = 11,190,624,903.06/80,445.50
  6. Step 6: Final answer
    x = 139,108.15

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.