Home / 81,546.04-122,350.19-31,661.16

Finding the Fourth Proportional to 81,546.04, 122,350.19 and 31,661.16

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Solution

The fourth proportional to 81,546.04, 122,350.19 and 31,661.16 is: 47,503.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,546.04 : 122,350.19 = 31,661.16 : x
  2. Step 2: Convert to fraction form
    81,546.04/122,350.19 = 31,661.16/x
  3. Step 3: Cross multiply
    81,546.04x = 122,350.19 × 31,661.16
  4. Step 4: Simplify right side
    81,546.04x = 3,873,749,020.77
  5. Step 5: Solve for x
    x = 3,873,749,020.77/81,546.04
  6. Step 6: Final answer
    x = 47,503.83

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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.