Home / 91,261.45-125,939.47-50,975.78

Finding the Fourth Proportional to 91,261.45, 125,939.47 and 50,975.78

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Solution

The fourth proportional to 91,261.45, 125,939.47 and 50,975.78 is: 70,345.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,261.45 : 125,939.47 = 50,975.78 : x
  2. Step 2: Convert to fraction form
    91,261.45/125,939.47 = 50,975.78/x
  3. Step 3: Cross multiply
    91,261.45x = 125,939.47 × 50,975.78
  4. Step 4: Simplify right side
    91,261.45x = 6,419,862,716.04
  5. Step 5: Solve for x
    x = 6,419,862,716.04/91,261.45
  6. Step 6: Final answer
    x = 70,345.83

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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.