Home / 50,078.85-75,128.36-18,489.12

Finding the Fourth Proportional to 50,078.85, 75,128.36 and 18,489.12

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Solution

The fourth proportional to 50,078.85, 75,128.36 and 18,489.12 is: 27,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,078.85 : 75,128.36 = 18,489.12 : x
  2. Step 2: Convert to fraction form
    50,078.85/75,128.36 = 18,489.12/x
  3. Step 3: Cross multiply
    50,078.85x = 75,128.36 × 18,489.12
  4. Step 4: Simplify right side
    50,078.85x = 1,389,057,171.00
  5. Step 5: Solve for x
    x = 1,389,057,171.00/50,078.85
  6. Step 6: Final answer
    x = 27,737.40

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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.