Home / 81,209.43-121,814.04-22,053.78

Finding the Fourth Proportional to 81,209.43, 121,814.04 and 22,053.78

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Solution

The fourth proportional to 81,209.43, 121,814.04 and 22,053.78 is: 33,080.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,209.43 : 121,814.04 = 22,053.78 : x
  2. Step 2: Convert to fraction form
    81,209.43/121,814.04 = 22,053.78/x
  3. Step 3: Cross multiply
    81,209.43x = 121,814.04 × 22,053.78
  4. Step 4: Simplify right side
    81,209.43x = 2,686,460,039.07
  5. Step 5: Solve for x
    x = 2,686,460,039.07/81,209.43
  6. Step 6: Final answer
    x = 33,080.64

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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.