Home / 55,206.05-82,810.43-20,145.70

Finding the Fourth Proportional to 55,206.05, 82,810.43 and 20,145.70

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Solution

The fourth proportional to 55,206.05, 82,810.43 and 20,145.70 is: 30,219.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,206.05 : 82,810.43 = 20,145.70 : x
  2. Step 2: Convert to fraction form
    55,206.05/82,810.43 = 20,145.70/x
  3. Step 3: Cross multiply
    55,206.05x = 82,810.43 × 20,145.70
  4. Step 4: Simplify right side
    55,206.05x = 1,668,273,564.87
  5. Step 5: Solve for x
    x = 1,668,273,564.87/55,206.05
  6. Step 6: Final answer
    x = 30,219.04

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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.