Home / 50,172.55-75,271.28-20,188.78

Finding the Fourth Proportional to 50,172.55, 75,271.28 and 20,188.78

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Solution

The fourth proportional to 50,172.55, 75,271.28 and 20,188.78 is: 30,288.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,172.55 : 75,271.28 = 20,188.78 : x
  2. Step 2: Convert to fraction form
    50,172.55/75,271.28 = 20,188.78/x
  3. Step 3: Cross multiply
    50,172.55x = 75,271.28 × 20,188.78
  4. Step 4: Simplify right side
    50,172.55x = 1,519,635,312.24
  5. Step 5: Solve for x
    x = 1,519,635,312.24/50,172.55
  6. Step 6: Final answer
    x = 30,288.18

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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.