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Finding the Fourth Proportional to 55,994.56, 83,999.75 and 20,930.88

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Solution

The fourth proportional to 55,994.56, 83,999.75 and 20,930.88 is: 31,399.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,994.56 : 83,999.75 = 20,930.88 : x
  2. Step 2: Convert to fraction form
    55,994.56/83,999.75 = 20,930.88/x
  3. Step 3: Cross multiply
    55,994.56x = 83,999.75 × 20,930.88
  4. Step 4: Simplify right side
    55,994.56x = 1,758,188,687.28
  5. Step 5: Solve for x
    x = 1,758,188,687.28/55,994.56
  6. Step 6: Final answer
    x = 31,399.28

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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.