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Finding the Fourth Proportional to 55,672.58, 83,519.79 and 20,612.54

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Solution

The fourth proportional to 55,672.58, 83,519.79 and 20,612.54 is: 30,922.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,672.58 : 83,519.79 = 20,612.54 : x
  2. Step 2: Convert to fraction form
    55,672.58/83,519.79 = 20,612.54/x
  3. Step 3: Cross multiply
    55,672.58x = 83,519.79 × 20,612.54
  4. Step 4: Simplify right side
    55,672.58x = 1,721,555,012.17
  5. Step 5: Solve for x
    x = 1,721,555,012.17/55,672.58
  6. Step 6: Final answer
    x = 30,922.85

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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.