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Finding the Fourth Proportional to 90,790.94, 125,292.47 and 49,955.60

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Solution

The fourth proportional to 90,790.94, 125,292.47 and 49,955.60 is: 68,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,790.94 : 125,292.47 = 49,955.60 : x
  2. Step 2: Convert to fraction form
    90,790.94/125,292.47 = 49,955.60/x
  3. Step 3: Cross multiply
    90,790.94x = 125,292.47 × 49,955.60
  4. Step 4: Simplify right side
    90,790.94x = 6,259,060,858.79
  5. Step 5: Solve for x
    x = 6,259,060,858.79/90,790.94
  6. Step 6: Final answer
    x = 68,939.27

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.