Home / 84,605.78-116,519.09-82,768.98

Finding the Fourth Proportional to 84,605.78, 116,519.09 and 82,768.98

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Solution

The fourth proportional to 84,605.78, 116,519.09 and 82,768.98 is: 113,989.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,605.78 : 116,519.09 = 82,768.98 : x
  2. Step 2: Convert to fraction form
    84,605.78/116,519.09 = 82,768.98/x
  3. Step 3: Cross multiply
    84,605.78x = 116,519.09 × 82,768.98
  4. Step 4: Simplify right side
    84,605.78x = 9,644,166,229.83
  5. Step 5: Solve for x
    x = 9,644,166,229.83/84,605.78
  6. Step 6: Final answer
    x = 113,989.45

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1.5x scale

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.