Home / 81,278.06-121,914.77-25,110

Finding the Fourth Proportional to 81,278.06, 121,914.77 and 25,110

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Solution

The fourth proportional to 81,278.06, 121,914.77 and 25,110 is: 37,664.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,278.06 : 121,914.77 = 25,110 : x
  2. Step 2: Convert to fraction form
    81,278.06/121,914.77 = 25,110/x
  3. Step 3: Cross multiply
    81,278.06x = 121,914.77 × 25,110
  4. Step 4: Simplify right side
    81,278.06x = 3,061,279,749.15
  5. Step 5: Solve for x
    x = 3,061,279,749.15/81,278.06
  6. Step 6: Final answer
    x = 37,664.28

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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.