Home / 81,192,132.21-121,782,073.90-25,857,731.04

Finding the Fourth Proportional to 81,192,132.21, 121,782,073.90 and 25,857,731.04

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Solution

The fourth proportional to 81,192,132.21, 121,782,073.90 and 25,857,731.04 is: 38,784,646.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,192,132.21 : 121,782,073.90 = 25,857,731.04 : x
  2. Step 2: Convert to fraction form
    81,192,132.21/121,782,073.90 = 25,857,731.04/x
  3. Step 3: Cross multiply
    81,192,132.21x = 121,782,073.90 × 25,857,731.04
  4. Step 4: Simplify right side
    81,192,132.21x = 3,149,008,112,399,604
  5. Step 5: Solve for x
    x = 3,149,008,112,399,604/81,192,132.21
  6. Step 6: Final answer
    x = 38,784,646.08

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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.