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Finding the Third Proportional to 21,256,576.88 and 31,879,321.88

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Solution

The third proportional to 21,256,576.88 and 31,879,321.88 is: 47,810,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256,576.88 : 31,879,321.88 = 31,879,321.88 : x
  2. Step 2: Convert to fraction form
    21,256,576.88/31,879,321.88 = 31,879,321.88/x
  3. Step 3: Cross multiply
    21,256,576.88x = 31,879,321.88 × 31,879,321.88
  4. Step 4: Simplify right side
    21,256,576.88x = 1,016,291,163,209,853.50
  5. Step 5: Solve for x
    x = 1,016,291,163,209,853.50/21,256,576.88
  6. Step 6: Final answer
    x = 47,810,669.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.