Home / 81,628.56-122,403.96-29,023.92

Finding the Fourth Proportional to 81,628.56, 122,403.96 and 29,023.92

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Solution

The fourth proportional to 81,628.56, 122,403.96 and 29,023.92 is: 43,522.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,628.56 : 122,403.96 = 29,023.92 : x
  2. Step 2: Convert to fraction form
    81,628.56/122,403.96 = 29,023.92/x
  3. Step 3: Cross multiply
    81,628.56x = 122,403.96 × 29,023.92
  4. Step 4: Simplify right side
    81,628.56x = 3,552,642,742.72
  5. Step 5: Solve for x
    x = 3,552,642,742.72/81,628.56
  6. Step 6: Final answer
    x = 43,522.06

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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.