Home / 91,416.80-126,161.78-51,143.53

Finding the Fourth Proportional to 91,416.80, 126,161.78 and 51,143.53

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Solution

The fourth proportional to 91,416.80, 126,161.78 and 51,143.53 is: 70,581.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,416.80 : 126,161.78 = 51,143.53 : x
  2. Step 2: Convert to fraction form
    91,416.80/126,161.78 = 51,143.53/x
  3. Step 3: Cross multiply
    91,416.80x = 126,161.78 × 51,143.53
  4. Step 4: Simplify right side
    91,416.80x = 6,452,358,234.73
  5. Step 5: Solve for x
    x = 6,452,358,234.73/91,416.80
  6. Step 6: Final answer
    x = 70,581.75

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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.