Home / 81,061,859.90-121,593,074.06-19,650,768.68

Finding the Fourth Proportional to 81,061,859.90, 121,593,074.06 and 19,650,768.68

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Solution

The fourth proportional to 81,061,859.90, 121,593,074.06 and 19,650,768.68 is: 29,476,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,061,859.90 : 121,593,074.06 = 19,650,768.68 : x
  2. Step 2: Convert to fraction form
    81,061,859.90/121,593,074.06 = 19,650,768.68/x
  3. Step 3: Cross multiply
    81,061,859.90x = 121,593,074.06 × 19,650,768.68
  4. Step 4: Simplify right side
    81,061,859.90x = 2,389,397,371,796,278
  5. Step 5: Solve for x
    x = 2,389,397,371,796,278/81,061,859.90
  6. Step 6: Final answer
    x = 29,476,221.92

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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.