Home / 81,449.37-122,209.70-37,080.81

Finding the Fourth Proportional to 81,449.37, 122,209.70 and 37,080.81

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Solution

The fourth proportional to 81,449.37, 122,209.70 and 37,080.81 is: 55,637.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449.37 : 122,209.70 = 37,080.81 : x
  2. Step 2: Convert to fraction form
    81,449.37/122,209.70 = 37,080.81/x
  3. Step 3: Cross multiply
    81,449.37x = 122,209.70 × 37,080.81
  4. Step 4: Simplify right side
    81,449.37x = 4,531,634,480.45
  5. Step 5: Solve for x
    x = 4,531,634,480.45/81,449.37
  6. Step 6: Final answer
    x = 55,637.44

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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.