Home / 91,308.25-126,005.39-55,491.57

Finding the Fourth Proportional to 91,308.25, 126,005.39 and 55,491.57

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Solution

The fourth proportional to 91,308.25, 126,005.39 and 55,491.57 is: 76,578.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,308.25 : 126,005.39 = 55,491.57 : x
  2. Step 2: Convert to fraction form
    91,308.25/126,005.39 = 55,491.57/x
  3. Step 3: Cross multiply
    91,308.25x = 126,005.39 × 55,491.57
  4. Step 4: Simplify right side
    91,308.25x = 6,992,236,919.56
  5. Step 5: Solve for x
    x = 6,992,236,919.56/91,308.25
  6. Step 6: Final answer
    x = 76,578.37

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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.