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Finding the Fourth Proportional to 36,698.80, 55,048.20 and 36,439.60

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Solution

The fourth proportional to 36,698.80, 55,048.20 and 36,439.60 is: 54,659.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,698.80 : 55,048.20 = 36,439.60 : x
  2. Step 2: Convert to fraction form
    36,698.80/55,048.20 = 36,439.60/x
  3. Step 3: Cross multiply
    36,698.80x = 55,048.20 × 36,439.60
  4. Step 4: Simplify right side
    36,698.80x = 2,005,934,388.72
  5. Step 5: Solve for x
    x = 2,005,934,388.72/36,698.80
  6. Step 6: Final answer
    x = 54,659.40

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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.