Home / 53,721.42-80,582.12-20,433.80

Finding the Fourth Proportional to 53,721.42, 80,582.12 and 20,433.80

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Solution

The fourth proportional to 53,721.42, 80,582.12 and 20,433.80 is: 30,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,721.42 : 80,582.12 = 20,433.80 : x
  2. Step 2: Convert to fraction form
    53,721.42/80,582.12 = 20,433.80/x
  3. Step 3: Cross multiply
    53,721.42x = 80,582.12 × 20,433.80
  4. Step 4: Simplify right side
    53,721.42x = 1,646,598,923.66
  5. Step 5: Solve for x
    x = 1,646,598,923.66/53,721.42
  6. Step 6: Final answer
    x = 30,650.70

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Double scale
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Similar ratio
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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.