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Finding the Third Proportional to 8,516,408.66 and 18,681,618.83

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Solution

The third proportional to 8,516,408.66 and 18,681,618.83 is: 40,980,053.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516,408.66 : 18,681,618.83 = 18,681,618.83 : x
  2. Step 2: Convert to fraction form
    8,516,408.66/18,681,618.83 = 18,681,618.83/x
  3. Step 3: Cross multiply
    8,516,408.66x = 18,681,618.83 × 18,681,618.83
  4. Step 4: Simplify right side
    8,516,408.66x = 349,002,882,185,295.31
  5. Step 5: Solve for x
    x = 349,002,882,185,295.31/8,516,408.66
  6. Step 6: Final answer
    x = 40,980,053.46

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.