Home / 91,601.28-126,408.60-51,314.31

Finding the Fourth Proportional to 91,601.28, 126,408.60 and 51,314.31

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Solution

The fourth proportional to 91,601.28, 126,408.60 and 51,314.31 is: 70,813.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,601.28 : 126,408.60 = 51,314.31 : x
  2. Step 2: Convert to fraction form
    91,601.28/126,408.60 = 51,314.31/x
  3. Step 3: Cross multiply
    91,601.28x = 126,408.60 × 51,314.31
  4. Step 4: Simplify right side
    91,601.28x = 6,486,570,087.07
  5. Step 5: Solve for x
    x = 6,486,570,087.07/91,601.28
  6. Step 6: Final answer
    x = 70,813.09

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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.