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Finding the Third Proportional to 7,970,866.50 and 12,689,370

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Solution

The third proportional to 7,970,866.50 and 12,689,370 is: 20,201,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,970,866.50 : 12,689,370 = 12,689,370 : x
  2. Step 2: Convert to fraction form
    7,970,866.50/12,689,370 = 12,689,370/x
  3. Step 3: Cross multiply
    7,970,866.50x = 12,689,370 × 12,689,370
  4. Step 4: Simplify right side
    7,970,866.50x = 161,020,110,996,900
  5. Step 5: Solve for x
    x = 161,020,110,996,900/7,970,866.50
  6. Step 6: Final answer
    x = 20,201,079.89

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.