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Finding the Third Proportional to 7,172,685 and 15,478,861

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Solution

The third proportional to 7,172,685 and 15,478,861 is: 33,403,828.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,172,685 : 15,478,861 = 15,478,861 : x
  2. Step 2: Convert to fraction form
    7,172,685/15,478,861 = 15,478,861/x
  3. Step 3: Cross multiply
    7,172,685x = 15,478,861 × 15,478,861
  4. Step 4: Simplify right side
    7,172,685x = 239,595,137,857,321
  5. Step 5: Solve for x
    x = 239,595,137,857,321/7,172,685
  6. Step 6: Final answer
    x = 33,403,828.25

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.