Home / 81,536.22-122,315.67-28,933.20

Finding the Fourth Proportional to 81,536.22, 122,315.67 and 28,933.20

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Solution

The fourth proportional to 81,536.22, 122,315.67 and 28,933.20 is: 43,403.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,536.22 : 122,315.67 = 28,933.20 : x
  2. Step 2: Convert to fraction form
    81,536.22/122,315.67 = 28,933.20/x
  3. Step 3: Cross multiply
    81,536.22x = 122,315.67 × 28,933.20
  4. Step 4: Simplify right side
    81,536.22x = 3,538,983,743.24
  5. Step 5: Solve for x
    x = 3,538,983,743.24/81,536.22
  6. Step 6: Final answer
    x = 43,403.82

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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.