Home / 91,100.08-125,718.24-50,812.78

Finding the Fourth Proportional to 91,100.08, 125,718.24 and 50,812.78

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Solution

The fourth proportional to 91,100.08, 125,718.24 and 50,812.78 is: 70,121.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,100.08 : 125,718.24 = 50,812.78 : x
  2. Step 2: Convert to fraction form
    91,100.08/125,718.24 = 50,812.78/x
  3. Step 3: Cross multiply
    91,100.08x = 125,718.24 × 50,812.78
  4. Step 4: Simplify right side
    91,100.08x = 6,388,093,271.11
  5. Step 5: Solve for x
    x = 6,388,093,271.11/91,100.08
  6. Step 6: Final answer
    x = 70,121.71

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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.