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Finding the Third Proportional to 18,458,424 and 40,066,128

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Solution

The third proportional to 18,458,424 and 40,066,128 is: 86,968,129.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,458,424 : 40,066,128 = 40,066,128 : x
  2. Step 2: Convert to fraction form
    18,458,424/40,066,128 = 40,066,128/x
  3. Step 3: Cross multiply
    18,458,424x = 40,066,128 × 40,066,128
  4. Step 4: Simplify right side
    18,458,424x = 1,605,294,612,912,384
  5. Step 5: Solve for x
    x = 1,605,294,612,912,384/18,458,424
  6. Step 6: Final answer
    x = 86,968,129.72

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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.