Home / 55,212.31-82,802.04-20,143.75

Finding the Fourth Proportional to 55,212.31, 82,802.04 and 20,143.75

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Solution

The fourth proportional to 55,212.31, 82,802.04 and 20,143.75 is: 30,209.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,212.31 : 82,802.04 = 20,143.75 : x
  2. Step 2: Convert to fraction form
    55,212.31/82,802.04 = 20,143.75/x
  3. Step 3: Cross multiply
    55,212.31x = 82,802.04 × 20,143.75
  4. Step 4: Simplify right side
    55,212.31x = 1,667,943,593.25
  5. Step 5: Solve for x
    x = 1,667,943,593.25/55,212.31
  6. Step 6: Final answer
    x = 30,209.63

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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.