Home / 81,636.75-122,418.18-29,047.62

Finding the Fourth Proportional to 81,636.75, 122,418.18 and 29,047.62

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Solution

The fourth proportional to 81,636.75, 122,418.18 and 29,047.62 is: 43,558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,636.75 : 122,418.18 = 29,047.62 : x
  2. Step 2: Convert to fraction form
    81,636.75/122,418.18 = 29,047.62/x
  3. Step 3: Cross multiply
    81,636.75x = 122,418.18 × 29,047.62
  4. Step 4: Simplify right side
    81,636.75x = 3,555,956,773.73
  5. Step 5: Solve for x
    x = 3,555,956,773.73/81,636.75
  6. Step 6: Final answer
    x = 43,558.28

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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.