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Finding the Fourth Proportional to 20,404,442.90, 30,606,664.36 and 20,404,442.90

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Solution

The fourth proportional to 20,404,442.90, 30,606,664.36 and 20,404,442.90 is: 30,606,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,404,442.90 : 30,606,664.36 = 20,404,442.90 : x
  2. Step 2: Convert to fraction form
    20,404,442.90/30,606,664.36 = 20,404,442.90/x
  3. Step 3: Cross multiply
    20,404,442.90x = 30,606,664.36 × 20,404,442.90
  4. Step 4: Simplify right side
    20,404,442.90x = 624,511,935,293,085
  5. Step 5: Solve for x
    x = 624,511,935,293,085/20,404,442.90
  6. Step 6: Final answer
    x = 30,606,664.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.