Home / 82,289.78-123,434.67-19,960.28

Finding the Fourth Proportional to 82,289.78, 123,434.67 and 19,960.28

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Solution

The fourth proportional to 82,289.78, 123,434.67 and 19,960.28 is: 29,940.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,289.78 : 123,434.67 = 19,960.28 : x
  2. Step 2: Convert to fraction form
    82,289.78/123,434.67 = 19,960.28/x
  3. Step 3: Cross multiply
    82,289.78x = 123,434.67 × 19,960.28
  4. Step 4: Simplify right side
    82,289.78x = 2,463,789,957.73
  5. Step 5: Solve for x
    x = 2,463,789,957.73/82,289.78
  6. Step 6: Final answer
    x = 29,940.41

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Double scale
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Similar ratio
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1.5x scale

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.