Home / 89,125.50-122,993.19-51,399.75

Finding the Fourth Proportional to 89,125.50, 122,993.19 and 51,399.75

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Solution

The fourth proportional to 89,125.50, 122,993.19 and 51,399.75 is: 70,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,125.50 : 122,993.19 = 51,399.75 : x
  2. Step 2: Convert to fraction form
    89,125.50/122,993.19 = 51,399.75/x
  3. Step 3: Cross multiply
    89,125.50x = 122,993.19 × 51,399.75
  4. Step 4: Simplify right side
    89,125.50x = 6,321,819,217.70
  5. Step 5: Solve for x
    x = 6,321,819,217.70/89,125.50
  6. Step 6: Final answer
    x = 70,931.66

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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.