Home / 81,205.16-121,776.53-27,887.22

Finding the Fourth Proportional to 81,205.16, 121,776.53 and 27,887.22

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Solution

The fourth proportional to 81,205.16, 121,776.53 and 27,887.22 is: 41,820.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,205.16 : 121,776.53 = 27,887.22 : x
  2. Step 2: Convert to fraction form
    81,205.16/121,776.53 = 27,887.22/x
  3. Step 3: Cross multiply
    81,205.16x = 121,776.53 × 27,887.22
  4. Step 4: Simplify right side
    81,205.16x = 3,396,008,743.51
  5. Step 5: Solve for x
    x = 3,396,008,743.51/81,205.16
  6. Step 6: Final answer
    x = 41,820.11

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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.