Home / 55,211.31-82,800.54-20,142.75

Finding the Fourth Proportional to 55,211.31, 82,800.54 and 20,142.75

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Solution

The fourth proportional to 55,211.31, 82,800.54 and 20,142.75 is: 30,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,211.31 : 82,800.54 = 20,142.75 : x
  2. Step 2: Convert to fraction form
    55,211.31/82,800.54 = 20,142.75/x
  3. Step 3: Cross multiply
    55,211.31x = 82,800.54 × 20,142.75
  4. Step 4: Simplify right side
    55,211.31x = 1,667,830,577.09
  5. Step 5: Solve for x
    x = 1,667,830,577.09/55,211.31
  6. Step 6: Final answer
    x = 30,208.13

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1.5x scale

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.