Home / 80,534.02-120,782.67-30,619.66

Finding the Fourth Proportional to 80,534.02, 120,782.67 and 30,619.66

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Solution

The fourth proportional to 80,534.02, 120,782.67 and 30,619.66 is: 45,922.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,534.02 : 120,782.67 = 30,619.66 : x
  2. Step 2: Convert to fraction form
    80,534.02/120,782.67 = 30,619.66/x
  3. Step 3: Cross multiply
    80,534.02x = 120,782.67 × 30,619.66
  4. Step 4: Simplify right side
    80,534.02x = 3,698,324,289.29
  5. Step 5: Solve for x
    x = 3,698,324,289.29/80,534.02
  6. Step 6: Final answer
    x = 45,922.51

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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.