Home / 81,669.35-122,446.11-31,707.34

Finding the Fourth Proportional to 81,669.35, 122,446.11 and 31,707.34

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Solution

The fourth proportional to 81,669.35, 122,446.11 and 31,707.34 is: 47,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,669.35 : 122,446.11 = 31,707.34 : x
  2. Step 2: Convert to fraction form
    81,669.35/122,446.11 = 31,707.34/x
  3. Step 3: Cross multiply
    81,669.35x = 122,446.11 × 31,707.34
  4. Step 4: Simplify right side
    81,669.35x = 3,882,440,441.45
  5. Step 5: Solve for x
    x = 3,882,440,441.45/81,669.35
  6. Step 6: Final answer
    x = 47,538.53

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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.