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Finding the Third Proportional to 5,638,780.50 and 12,289,957.50

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Solution

The third proportional to 5,638,780.50 and 12,289,957.50 is: 26,786,475.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638,780.50 : 12,289,957.50 = 12,289,957.50 : x
  2. Step 2: Convert to fraction form
    5,638,780.50/12,289,957.50 = 12,289,957.50/x
  3. Step 3: Cross multiply
    5,638,780.50x = 12,289,957.50 × 12,289,957.50
  4. Step 4: Simplify right side
    5,638,780.50x = 151,043,055,351,806.25
  5. Step 5: Solve for x
    x = 151,043,055,351,806.25/5,638,780.50
  6. Step 6: Final answer
    x = 26,786,475.44

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.