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Finding the Third Proportional to 4,276,921.50 and 8,856,985.50

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Solution

The third proportional to 4,276,921.50 and 8,856,985.50 is: 18,341,742.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,276,921.50 : 8,856,985.50 = 8,856,985.50 : x
  2. Step 2: Convert to fraction form
    4,276,921.50/8,856,985.50 = 8,856,985.50/x
  3. Step 3: Cross multiply
    4,276,921.50x = 8,856,985.50 × 8,856,985.50
  4. Step 4: Simplify right side
    4,276,921.50x = 78,446,192,147,210.25
  5. Step 5: Solve for x
    x = 78,446,192,147,210.25/4,276,921.50
  6. Step 6: Final answer
    x = 18,341,742.34

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.