Home / 39,942,353,628.61-55,119,766,780.14-21,631,262,908.43

Finding the Fourth Proportional to 39,942,353,628.61, 55,119,766,780.14 and 21,631,262,908.43

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Solution

The fourth proportional to 39,942,353,628.61, 55,119,766,780.14 and 21,631,262,908.43 is: 29,850,773,886.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,942,353,628.61 : 55,119,766,780.14 = 21,631,262,908.43 : x
  2. Step 2: Convert to fraction form
    39,942,353,628.61/55,119,766,780.14 = 21,631,262,908.43/x
  3. Step 3: Cross multiply
    39,942,353,628.61x = 55,119,766,780.14 × 21,631,262,908.43
  4. Step 4: Simplify right side
    39,942,353,628.61x = 1,192,310,166,672,642,932,736
  5. Step 5: Solve for x
    x = 1,192,310,166,672,642,932,736/39,942,353,628.61
  6. Step 6: Final answer
    x = 29,850,773,886.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.