Home / 80,506.06-120,762.33-20,536.09

Finding the Fourth Proportional to 80,506.06, 120,762.33 and 20,536.09

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Solution

The fourth proportional to 80,506.06, 120,762.33 and 20,536.09 is: 30,804.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,506.06 : 120,762.33 = 20,536.09 : x
  2. Step 2: Convert to fraction form
    80,506.06/120,762.33 = 20,536.09/x
  3. Step 3: Cross multiply
    80,506.06x = 120,762.33 × 20,536.09
  4. Step 4: Simplify right side
    80,506.06x = 2,479,986,077.49
  5. Step 5: Solve for x
    x = 2,479,986,077.49/80,506.06
  6. Step 6: Final answer
    x = 30,804.96

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1.5x scale

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.