Home / 50,021.78-75,032.80-20,439.62

Finding the Fourth Proportional to 50,021.78, 75,032.80 and 20,439.62

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Solution

The fourth proportional to 50,021.78, 75,032.80 and 20,439.62 is: 30,659.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,021.78 : 75,032.80 = 20,439.62 : x
  2. Step 2: Convert to fraction form
    50,021.78/75,032.80 = 20,439.62/x
  3. Step 3: Cross multiply
    50,021.78x = 75,032.80 × 20,439.62
  4. Step 4: Simplify right side
    50,021.78x = 1,533,641,889.62
  5. Step 5: Solve for x
    x = 1,533,641,889.62/50,021.78
  6. Step 6: Final answer
    x = 30,659.48

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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.