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Finding the Third Proportional to 54,921 and 80,437.50

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Solution

The third proportional to 54,921 and 80,437.50 is: 117,809.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,921 : 80,437.50 = 80,437.50 : x
  2. Step 2: Convert to fraction form
    54,921/80,437.50 = 80,437.50/x
  3. Step 3: Cross multiply
    54,921x = 80,437.50 × 80,437.50
  4. Step 4: Simplify right side
    54,921x = 6,470,191,406.25
  5. Step 5: Solve for x
    x = 6,470,191,406.25/54,921
  6. Step 6: Final answer
    x = 117,809.06

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.