Home / 53,911.49-80,872.09-20,630.21

Finding the Fourth Proportional to 53,911.49, 80,872.09 and 20,630.21

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Solution

The fourth proportional to 53,911.49, 80,872.09 and 20,630.21 is: 30,947.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,911.49 : 80,872.09 = 20,630.21 : x
  2. Step 2: Convert to fraction form
    53,911.49/80,872.09 = 20,630.21/x
  3. Step 3: Cross multiply
    53,911.49x = 80,872.09 × 20,630.21
  4. Step 4: Simplify right side
    53,911.49x = 1,668,407,743.90
  5. Step 5: Solve for x
    x = 1,668,407,743.90/53,911.49
  6. Step 6: Final answer
    x = 30,947.17

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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.