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Finding the Third Proportional to 20,402,485 and 43,107,639

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Solution

The third proportional to 20,402,485 and 43,107,639 is: 91,080,500.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402,485 : 43,107,639 = 43,107,639 : x
  2. Step 2: Convert to fraction form
    20,402,485/43,107,639 = 43,107,639/x
  3. Step 3: Cross multiply
    20,402,485x = 43,107,639 × 43,107,639
  4. Step 4: Simplify right side
    20,402,485x = 1,858,268,540,154,321
  5. Step 5: Solve for x
    x = 1,858,268,540,154,321/20,402,485
  6. Step 6: Final answer
    x = 91,080,500.25

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.