Home / 53,479.85-80,220.78-20,215.58

Finding the Fourth Proportional to 53,479.85, 80,220.78 and 20,215.58

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Solution

The fourth proportional to 53,479.85, 80,220.78 and 20,215.58 is: 30,323.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,479.85 : 80,220.78 = 20,215.58 : x
  2. Step 2: Convert to fraction form
    53,479.85/80,220.78 = 20,215.58/x
  3. Step 3: Cross multiply
    53,479.85x = 80,220.78 × 20,215.58
  4. Step 4: Simplify right side
    53,479.85x = 1,621,709,194.65
  5. Step 5: Solve for x
    x = 1,621,709,194.65/53,479.85
  6. Step 6: Final answer
    x = 30,323.75

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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.