Home / 81,193,374.68-121,783,936.56-25,858,973.60

Finding the Fourth Proportional to 81,193,374.68, 121,783,936.56 and 25,858,973.60

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Solution

The fourth proportional to 81,193,374.68, 121,783,936.56 and 25,858,973.60 is: 38,786,509.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,193,374.68 : 121,783,936.56 = 25,858,973.60 : x
  2. Step 2: Convert to fraction form
    81,193,374.68/121,783,936.56 = 25,858,973.60/x
  3. Step 3: Cross multiply
    81,193,374.68x = 121,783,936.56 × 25,858,973.60
  4. Step 4: Simplify right side
    81,193,374.68x = 3,149,207,600,409,115
  5. Step 5: Solve for x
    x = 3,149,207,600,409,115/81,193,374.68
  6. Step 6: Final answer
    x = 38,786,509.53

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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.