Home / 81,022,992.46-121,539,896.28-28,494,359.92

Finding the Fourth Proportional to 81,022,992.46, 121,539,896.28 and 28,494,359.92

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Solution

The fourth proportional to 81,022,992.46, 121,539,896.28 and 28,494,359.92 is: 42,743,441.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,022,992.46 : 121,539,896.28 = 28,494,359.92 : x
  2. Step 2: Convert to fraction form
    81,022,992.46/121,539,896.28 = 28,494,359.92/x
  3. Step 3: Cross multiply
    81,022,992.46x = 121,539,896.28 × 28,494,359.92
  4. Step 4: Simplify right side
    81,022,992.46x = 3,463,201,549,241,789.50
  5. Step 5: Solve for x
    x = 3,463,201,549,241,789.50/81,022,992.46
  6. Step 6: Final answer
    x = 42,743,441.63

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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.