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Finding the Third Proportional to 21,051,103.50 and 31,489,276.50

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Solution

The third proportional to 21,051,103.50 and 31,489,276.50 is: 47,103,209.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051,103.50 : 31,489,276.50 = 31,489,276.50 : x
  2. Step 2: Convert to fraction form
    21,051,103.50/31,489,276.50 = 31,489,276.50/x
  3. Step 3: Cross multiply
    21,051,103.50x = 31,489,276.50 × 31,489,276.50
  4. Step 4: Simplify right side
    21,051,103.50x = 991,574,534,493,452.25
  5. Step 5: Solve for x
    x = 991,574,534,493,452.25/21,051,103.50
  6. Step 6: Final answer
    x = 47,103,209.32

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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.