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Finding the Fourth Proportional to 55,474.64, 83,244.84 and 20,438.88

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Solution

The fourth proportional to 55,474.64, 83,244.84 and 20,438.88 is: 30,670.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,474.64 : 83,244.84 = 20,438.88 : x
  2. Step 2: Convert to fraction form
    55,474.64/83,244.84 = 20,438.88/x
  3. Step 3: Cross multiply
    55,474.64x = 83,244.84 × 20,438.88
  4. Step 4: Simplify right side
    55,474.64x = 1,701,431,295.38
  5. Step 5: Solve for x
    x = 1,701,431,295.38/55,474.64
  6. Step 6: Final answer
    x = 30,670.43

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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.