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Finding the Third Proportional to 5,639,642.25 and 8,221,808.25

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Solution

The third proportional to 5,639,642.25 and 8,221,808.25 is: 11,986,244.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639,642.25 : 8,221,808.25 = 8,221,808.25 : x
  2. Step 2: Convert to fraction form
    5,639,642.25/8,221,808.25 = 8,221,808.25/x
  3. Step 3: Cross multiply
    5,639,642.25x = 8,221,808.25 × 8,221,808.25
  4. Step 4: Simplify right side
    5,639,642.25x = 67,598,130,899,768.06
  5. Step 5: Solve for x
    x = 67,598,130,899,768.06/5,639,642.25
  6. Step 6: Final answer
    x = 11,986,244.50

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.