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Finding the Third Proportional to 20,640,640.22 and 28,872,276.61

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Solution

The third proportional to 20,640,640.22 and 28,872,276.61 is: 40,386,749.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640,640.22 : 28,872,276.61 = 28,872,276.61 : x
  2. Step 2: Convert to fraction form
    20,640,640.22/28,872,276.61 = 28,872,276.61/x
  3. Step 3: Cross multiply
    20,640,640.22x = 28,872,276.61 × 28,872,276.61
  4. Step 4: Simplify right side
    20,640,640.22x = 833,608,356,608,262.75
  5. Step 5: Solve for x
    x = 833,608,356,608,262.75/20,640,640.22
  6. Step 6: Final answer
    x = 40,386,749.04

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.