Home / 55,200.30-82,800.45-20,135.40

Finding the Fourth Proportional to 55,200.30, 82,800.45 and 20,135.40

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Solution

The fourth proportional to 55,200.30, 82,800.45 and 20,135.40 is: 30,203.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,200.30 : 82,800.45 = 20,135.40 : x
  2. Step 2: Convert to fraction form
    55,200.30/82,800.45 = 20,135.40/x
  3. Step 3: Cross multiply
    55,200.30x = 82,800.45 × 20,135.40
  4. Step 4: Simplify right side
    55,200.30x = 1,667,220,180.93
  5. Step 5: Solve for x
    x = 1,667,220,180.93/55,200.30
  6. Step 6: Final answer
    x = 30,203.10

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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.