Home / 71,970,237,399.31-99,322,049,628.09-39,855,599,553.59

Finding the Fourth Proportional to 71,970,237,399.31, 99,322,049,628.09 and 39,855,599,553.59

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Solution

The fourth proportional to 71,970,237,399.31, 99,322,049,628.09 and 39,855,599,553.59 is: 55,002,456,291.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,970,237,399.31 : 99,322,049,628.09 = 39,855,599,553.59 : x
  2. Step 2: Convert to fraction form
    71,970,237,399.31/99,322,049,628.09 = 39,855,599,553.59/x
  3. Step 3: Cross multiply
    71,970,237,399.31x = 99,322,049,628.09 × 39,855,599,553.59
  4. Step 4: Simplify right side
    71,970,237,399.31x = 3,958,539,836,818,748,080,128
  5. Step 5: Solve for x
    x = 3,958,539,836,818,748,080,128/71,970,237,399.31
  6. Step 6: Final answer
    x = 55,002,456,291.15

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1.5x scale

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.