Home / 90,812.28-125,310.06-50,515.86

Finding the Fourth Proportional to 90,812.28, 125,310.06 and 50,515.86

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Solution

The fourth proportional to 90,812.28, 125,310.06 and 50,515.86 is: 69,705.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,812.28 : 125,310.06 = 50,515.86 : x
  2. Step 2: Convert to fraction form
    90,812.28/125,310.06 = 50,515.86/x
  3. Step 3: Cross multiply
    90,812.28x = 125,310.06 × 50,515.86
  4. Step 4: Simplify right side
    90,812.28x = 6,330,145,447.55
  5. Step 5: Solve for x
    x = 6,330,145,447.55/90,812.28
  6. Step 6: Final answer
    x = 69,705.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.