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Finding the Fourth Proportional to 33,980.51, 50,970.31 and 20,805.20

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Solution

The fourth proportional to 33,980.51, 50,970.31 and 20,805.20 is: 31,207.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,980.51 : 50,970.31 = 20,805.20 : x
  2. Step 2: Convert to fraction form
    33,980.51/50,970.31 = 20,805.20/x
  3. Step 3: Cross multiply
    33,980.51x = 50,970.31 × 20,805.20
  4. Step 4: Simplify right side
    33,980.51x = 1,060,447,781.62
  5. Step 5: Solve for x
    x = 1,060,447,781.62/33,980.51
  6. Step 6: Final answer
    x = 31,207.53

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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.