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Finding the Third Proportional to 40,420 and 88,778

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Solution

The third proportional to 40,420 and 88,778 is: 194,990.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,420 : 88,778 = 88,778 : x
  2. Step 2: Convert to fraction form
    40,420/88,778 = 88,778/x
  3. Step 3: Cross multiply
    40,420x = 88,778 × 88,778
  4. Step 4: Simplify right side
    40,420x = 7,881,533,284
  5. Step 5: Solve for x
    x = 7,881,533,284/40,420
  6. Step 6: Final answer
    x = 194,990.93

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.