Home / 81,204.35-121,776.18-27,881.19

Finding the Fourth Proportional to 81,204.35, 121,776.18 and 27,881.19

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Solution

The fourth proportional to 81,204.35, 121,776.18 and 27,881.19 is: 41,811.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,204.35 : 121,776.18 = 27,881.19 : x
  2. Step 2: Convert to fraction form
    81,204.35/121,776.18 = 27,881.19/x
  3. Step 3: Cross multiply
    81,204.35x = 121,776.18 × 27,881.19
  4. Step 4: Simplify right side
    81,204.35x = 3,395,264,600.25
  5. Step 5: Solve for x
    x = 3,395,264,600.25/81,204.35
  6. Step 6: Final answer
    x = 41,811.36

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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.