Home / 76,841.37-115,262.06-20,681.60

Finding the Fourth Proportional to 76,841.37, 115,262.06 and 20,681.60

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Solution

The fourth proportional to 76,841.37, 115,262.06 and 20,681.60 is: 31,022.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,841.37 : 115,262.06 = 20,681.60 : x
  2. Step 2: Convert to fraction form
    76,841.37/115,262.06 = 20,681.60/x
  3. Step 3: Cross multiply
    76,841.37x = 115,262.06 × 20,681.60
  4. Step 4: Simplify right side
    76,841.37x = 2,383,803,140.38
  5. Step 5: Solve for x
    x = 2,383,803,140.38/76,841.37
  6. Step 6: Final answer
    x = 31,022.39

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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.