Home / 50,002.72-75,004.13-20,420.55

Finding the Fourth Proportional to 50,002.72, 75,004.13 and 20,420.55

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Solution

The fourth proportional to 50,002.72, 75,004.13 and 20,420.55 is: 30,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,002.72 : 75,004.13 = 20,420.55 : x
  2. Step 2: Convert to fraction form
    50,002.72/75,004.13 = 20,420.55/x
  3. Step 3: Cross multiply
    50,002.72x = 75,004.13 × 20,420.55
  4. Step 4: Simplify right side
    50,002.72x = 1,531,625,637.92
  5. Step 5: Solve for x
    x = 1,531,625,637.92/50,002.72
  6. Step 6: Final answer
    x = 30,630.85

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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.