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Finding the Fourth Proportional to 55,247.90, 82,885.75 and 21,956.90

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Solution

The fourth proportional to 55,247.90, 82,885.75 and 21,956.90 is: 32,940.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,247.90 : 82,885.75 = 21,956.90 : x
  2. Step 2: Convert to fraction form
    55,247.90/82,885.75 = 21,956.90/x
  3. Step 3: Cross multiply
    55,247.90x = 82,885.75 × 21,956.90
  4. Step 4: Simplify right side
    55,247.90x = 1,819,913,654.85
  5. Step 5: Solve for x
    x = 1,819,913,654.85/55,247.90
  6. Step 6: Final answer
    x = 32,940.87

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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.