Home / 53,918.06-80,874.66-20,653.80

Finding the Fourth Proportional to 53,918.06, 80,874.66 and 20,653.80

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Solution

The fourth proportional to 53,918.06, 80,874.66 and 20,653.80 is: 30,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,918.06 : 80,874.66 = 20,653.80 : x
  2. Step 2: Convert to fraction form
    53,918.06/80,874.66 = 20,653.80/x
  3. Step 3: Cross multiply
    53,918.06x = 80,874.66 × 20,653.80
  4. Step 4: Simplify right side
    53,918.06x = 1,670,369,052.71
  5. Step 5: Solve for x
    x = 1,670,369,052.71/53,918.06
  6. Step 6: Final answer
    x = 30,979.77

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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.