Home / 55,511.55-83,311.11-20,475.81

Finding the Fourth Proportional to 55,511.55, 83,311.11 and 20,475.81

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Solution

The fourth proportional to 55,511.55, 83,311.11 and 20,475.81 is: 30,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,511.55 : 83,311.11 = 20,475.81 : x
  2. Step 2: Convert to fraction form
    55,511.55/83,311.11 = 20,475.81/x
  3. Step 3: Cross multiply
    55,511.55x = 83,311.11 × 20,475.81
  4. Step 4: Simplify right side
    55,511.55x = 1,705,862,459.25
  5. Step 5: Solve for x
    x = 1,705,862,459.25/55,511.55
  6. Step 6: Final answer
    x = 30,729.87

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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.