Home / 55,120.39-82,699.11-21,850.04

Finding the Fourth Proportional to 55,120.39, 82,699.11 and 21,850.04

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Solution

The fourth proportional to 55,120.39, 82,699.11 and 21,850.04 is: 32,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,120.39 : 82,699.11 = 21,850.04 : x
  2. Step 2: Convert to fraction form
    55,120.39/82,699.11 = 21,850.04/x
  3. Step 3: Cross multiply
    55,120.39x = 82,699.11 × 21,850.04
  4. Step 4: Simplify right side
    55,120.39x = 1,806,978,861.46
  5. Step 5: Solve for x
    x = 1,806,978,861.46/55,120.39
  6. Step 6: Final answer
    x = 32,782.40

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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.