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Finding the Fourth Proportional to 21,054,906.45, 31,582,359.68 and 21,054,906.45

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Solution

The fourth proportional to 21,054,906.45, 31,582,359.68 and 21,054,906.45 is: 31,582,359.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,054,906.45 : 31,582,359.68 = 21,054,906.45 : x
  2. Step 2: Convert to fraction form
    21,054,906.45/31,582,359.68 = 21,054,906.45/x
  3. Step 3: Cross multiply
    21,054,906.45x = 31,582,359.68 × 21,054,906.45
  4. Step 4: Simplify right side
    21,054,906.45x = 664,963,628,427,377.38
  5. Step 5: Solve for x
    x = 664,963,628,427,377.38/21,054,906.45
  6. Step 6: Final answer
    x = 31,582,359.68

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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.