Home / 55,206.17-82,810.61-20,145.81

Finding the Fourth Proportional to 55,206.17, 82,810.61 and 20,145.81

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Solution

The fourth proportional to 55,206.17, 82,810.61 and 20,145.81 is: 30,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,206.17 : 82,810.61 = 20,145.81 : x
  2. Step 2: Convert to fraction form
    55,206.17/82,810.61 = 20,145.81/x
  3. Step 3: Cross multiply
    55,206.17x = 82,810.61 × 20,145.81
  4. Step 4: Simplify right side
    55,206.17x = 1,668,286,815.04
  5. Step 5: Solve for x
    x = 1,668,286,815.04/55,206.17
  6. Step 6: Final answer
    x = 30,219.21

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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.