Home / 53,911.12-80,863.94-20,628.62

Finding the Fourth Proportional to 53,911.12, 80,863.94 and 20,628.62

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Solution

The fourth proportional to 53,911.12, 80,863.94 and 20,628.62 is: 30,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,911.12 : 80,863.94 = 20,628.62 : x
  2. Step 2: Convert to fraction form
    53,911.12/80,863.94 = 20,628.62/x
  3. Step 3: Cross multiply
    53,911.12x = 80,863.94 × 20,628.62
  4. Step 4: Simplify right side
    53,911.12x = 1,668,111,489.96
  5. Step 5: Solve for x
    x = 1,668,111,489.96/53,911.12
  6. Step 6: Final answer
    x = 30,941.88

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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.