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Finding the Fourth Proportional to 81,194.88, 121,803.93 and 25,039.74

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Solution

The fourth proportional to 81,194.88, 121,803.93 and 25,039.74 is: 37,563.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,194.88 : 121,803.93 = 25,039.74 : x
  2. Step 2: Convert to fraction form
    81,194.88/121,803.93 = 25,039.74/x
  3. Step 3: Cross multiply
    81,194.88x = 121,803.93 × 25,039.74
  4. Step 4: Simplify right side
    81,194.88x = 3,049,938,738.18
  5. Step 5: Solve for x
    x = 3,049,938,738.18/81,194.88
  6. Step 6: Final answer
    x = 37,563.19

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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.