Home / 66,739.85-100,080.25-19,984.01

Finding the Fourth Proportional to 66,739.85, 100,080.25 and 19,984.01

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Solution

The fourth proportional to 66,739.85, 100,080.25 and 19,984.01 is: 29,967.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,739.85 : 100,080.25 = 19,984.01 : x
  2. Step 2: Convert to fraction form
    66,739.85/100,080.25 = 19,984.01/x
  3. Step 3: Cross multiply
    66,739.85x = 100,080.25 × 19,984.01
  4. Step 4: Simplify right side
    66,739.85x = 2,000,004,716.80
  5. Step 5: Solve for x
    x = 2,000,004,716.80/66,739.85
  6. Step 6: Final answer
    x = 29,967.17

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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.