Home / 63,668.20-87,834.90-39,778.60

Finding the Fourth Proportional to 63,668.20, 87,834.90 and 39,778.60

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Solution

The fourth proportional to 63,668.20, 87,834.90 and 39,778.60 is: 54,877.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,668.20 : 87,834.90 = 39,778.60 : x
  2. Step 2: Convert to fraction form
    63,668.20/87,834.90 = 39,778.60/x
  3. Step 3: Cross multiply
    63,668.20x = 87,834.90 × 39,778.60
  4. Step 4: Simplify right side
    63,668.20x = 3,493,949,353.14
  5. Step 5: Solve for x
    x = 3,493,949,353.14/63,668.20
  6. Step 6: Final answer
    x = 54,877.46

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1.5x scale

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.