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Finding the Fourth Proportional to 90,975.94, 125,549.22 and 50,691.40

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Solution

The fourth proportional to 90,975.94, 125,549.22 and 50,691.40 is: 69,955.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,975.94 : 125,549.22 = 50,691.40 : x
  2. Step 2: Convert to fraction form
    90,975.94/125,549.22 = 50,691.40/x
  3. Step 3: Cross multiply
    90,975.94x = 125,549.22 × 50,691.40
  4. Step 4: Simplify right side
    90,975.94x = 6,364,265,606.93
  5. Step 5: Solve for x
    x = 6,364,265,606.93/90,975.94
  6. Step 6: Final answer
    x = 69,955.48

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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.