Home / 78,668.20-118,002.30-50,674.60

Finding the Fourth Proportional to 78,668.20, 118,002.30 and 50,674.60

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Solution

The fourth proportional to 78,668.20, 118,002.30 and 50,674.60 is: 76,011.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,668.20 : 118,002.30 = 50,674.60 : x
  2. Step 2: Convert to fraction form
    78,668.20/118,002.30 = 50,674.60/x
  3. Step 3: Cross multiply
    78,668.20x = 118,002.30 × 50,674.60
  4. Step 4: Simplify right side
    78,668.20x = 5,979,719,351.58
  5. Step 5: Solve for x
    x = 5,979,719,351.58/78,668.20
  6. Step 6: Final answer
    x = 76,011.90

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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.