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Finding the Third Proportional to 65,800,957.50 and 91,989,067.50

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Solution

The third proportional to 65,800,957.50 and 91,989,067.50 is: 128,599,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,800,957.50 : 91,989,067.50 = 91,989,067.50 : x
  2. Step 2: Convert to fraction form
    65,800,957.50/91,989,067.50 = 91,989,067.50/x
  3. Step 3: Cross multiply
    65,800,957.50x = 91,989,067.50 × 91,989,067.50
  4. Step 4: Simplify right side
    65,800,957.50x = 8,461,988,539,519,556
  5. Step 5: Solve for x
    x = 8,461,988,539,519,556/65,800,957.50
  6. Step 6: Final answer
    x = 128,599,778.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.