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Finding the Third Proportional to 56,269.69 and 121,879.69

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Solution

The third proportional to 56,269.69 and 121,879.69 is: 263,990.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,269.69 : 121,879.69 = 121,879.69 : x
  2. Step 2: Convert to fraction form
    56,269.69/121,879.69 = 121,879.69/x
  3. Step 3: Cross multiply
    56,269.69x = 121,879.69 × 121,879.69
  4. Step 4: Simplify right side
    56,269.69x = 14,854,658,225.10
  5. Step 5: Solve for x
    x = 14,854,658,225.10/56,269.69
  6. Step 6: Final answer
    x = 263,990.42

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.