Home / 66,782.12-100,189.53-30,741.71

Finding the Fourth Proportional to 66,782.12, 100,189.53 and 30,741.71

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Solution

The fourth proportional to 66,782.12, 100,189.53 and 30,741.71 is: 46,120.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,782.12 : 100,189.53 = 30,741.71 : x
  2. Step 2: Convert to fraction form
    66,782.12/100,189.53 = 30,741.71/x
  3. Step 3: Cross multiply
    66,782.12x = 100,189.53 × 30,741.71
  4. Step 4: Simplify right side
    66,782.12x = 3,079,996,975.35
  5. Step 5: Solve for x
    x = 3,079,996,975.35/66,782.12
  6. Step 6: Final answer
    x = 46,120.09

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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.