Home / 91,390.26-126,121.32-51,105.72

Finding the Fourth Proportional to 91,390.26, 126,121.32 and 51,105.72

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Solution

The fourth proportional to 91,390.26, 126,121.32 and 51,105.72 is: 70,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,390.26 : 126,121.32 = 51,105.72 : x
  2. Step 2: Convert to fraction form
    91,390.26/126,121.32 = 51,105.72/x
  3. Step 3: Cross multiply
    91,390.26x = 126,121.32 × 51,105.72
  4. Step 4: Simplify right side
    91,390.26x = 6,445,520,865.95
  5. Step 5: Solve for x
    x = 6,445,520,865.95/91,390.26
  6. Step 6: Final answer
    x = 70,527.44

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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.