Home / 84,091.78-126,129.48-34,174.87

Finding the Fourth Proportional to 84,091.78, 126,129.48 and 34,174.87

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Solution

The fourth proportional to 84,091.78, 126,129.48 and 34,174.87 is: 51,258.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,091.78 : 126,129.48 = 34,174.87 : x
  2. Step 2: Convert to fraction form
    84,091.78/126,129.48 = 34,174.87/x
  3. Step 3: Cross multiply
    84,091.78x = 126,129.48 × 34,174.87
  4. Step 4: Simplify right side
    84,091.78x = 4,310,458,582.17
  5. Step 5: Solve for x
    x = 4,310,458,582.17/84,091.78
  6. Step 6: Final answer
    x = 51,258.98

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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.