Home / 55,128.94-82,712.85-20,072.14

Finding the Fourth Proportional to 55,128.94, 82,712.85 and 20,072.14

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Solution

The fourth proportional to 55,128.94, 82,712.85 and 20,072.14 is: 30,115.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.94 : 82,712.85 = 20,072.14 : x
  2. Step 2: Convert to fraction form
    55,128.94/82,712.85 = 20,072.14/x
  3. Step 3: Cross multiply
    55,128.94x = 82,712.85 × 20,072.14
  4. Step 4: Simplify right side
    55,128.94x = 1,660,223,905.00
  5. Step 5: Solve for x
    x = 1,660,223,905.00/55,128.94
  6. Step 6: Final answer
    x = 30,115.29

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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.