Home / 74,115.54-111,171.30-20,807.97

Finding the Fourth Proportional to 74,115.54, 111,171.30 and 20,807.97

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Solution

The fourth proportional to 74,115.54, 111,171.30 and 20,807.97 is: 31,211.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,115.54 : 111,171.30 = 20,807.97 : x
  2. Step 2: Convert to fraction form
    74,115.54/111,171.30 = 20,807.97/x
  3. Step 3: Cross multiply
    74,115.54x = 111,171.30 × 20,807.97
  4. Step 4: Simplify right side
    74,115.54x = 2,313,248,658.37
  5. Step 5: Solve for x
    x = 2,313,248,658.37/74,115.54
  6. Step 6: Final answer
    x = 31,211.38

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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.