Home / 81,542,365.84-122,313,800.36-20,131,531.60

Finding the Fourth Proportional to 81,542,365.84, 122,313,800.36 and 20,131,531.60

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Solution

The fourth proportional to 81,542,365.84, 122,313,800.36 and 20,131,531.60 is: 30,197,359.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,542,365.84 : 122,313,800.36 = 20,131,531.60 : x
  2. Step 2: Convert to fraction form
    81,542,365.84/122,313,800.36 = 20,131,531.60/x
  3. Step 3: Cross multiply
    81,542,365.84x = 122,313,800.36 × 20,131,531.60
  4. Step 4: Simplify right side
    81,542,365.84x = 2,462,364,137,063,431.50
  5. Step 5: Solve for x
    x = 2,462,364,137,063,431.50/81,542,365.84
  6. Step 6: Final answer
    x = 30,197,359.52

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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.