Home / 78,765.36-108,732.60-48,556.08

Finding the Fourth Proportional to 78,765.36, 108,732.60 and 48,556.08

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Solution

The fourth proportional to 78,765.36, 108,732.60 and 48,556.08 is: 67,029.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,765.36 : 108,732.60 = 48,556.08 : x
  2. Step 2: Convert to fraction form
    78,765.36/108,732.60 = 48,556.08/x
  3. Step 3: Cross multiply
    78,765.36x = 108,732.60 × 48,556.08
  4. Step 4: Simplify right side
    78,765.36x = 5,279,628,824.21
  5. Step 5: Solve for x
    x = 5,279,628,824.21/78,765.36
  6. Step 6: Final answer
    x = 67,029.83

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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.