Home / 51,431.67-70,982.28-28,771.92

Finding the Fourth Proportional to 51,431.67, 70,982.28 and 28,771.92

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Solution

The fourth proportional to 51,431.67, 70,982.28 and 28,771.92 is: 39,708.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.67 : 70,982.28 = 28,771.92 : x
  2. Step 2: Convert to fraction form
    51,431.67/70,982.28 = 28,771.92/x
  3. Step 3: Cross multiply
    51,431.67x = 70,982.28 × 28,771.92
  4. Step 4: Simplify right side
    51,431.67x = 2,042,296,481.58
  5. Step 5: Solve for x
    x = 2,042,296,481.58/51,431.67
  6. Step 6: Final answer
    x = 39,708.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.