Home / 79,078.20-118,556.55-39,663.60

Finding the Fourth Proportional to 79,078.20, 118,556.55 and 39,663.60

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Solution

The fourth proportional to 79,078.20, 118,556.55 and 39,663.60 is: 59,464.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,078.20 : 118,556.55 = 39,663.60 : x
  2. Step 2: Convert to fraction form
    79,078.20/118,556.55 = 39,663.60/x
  3. Step 3: Cross multiply
    79,078.20x = 118,556.55 × 39,663.60
  4. Step 4: Simplify right side
    79,078.20x = 4,702,379,576.58
  5. Step 5: Solve for x
    x = 4,702,379,576.58/79,078.20
  6. Step 6: Final answer
    x = 59,464.93

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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.