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Finding the Fourth Proportional to 91,172.39, 125,805.35 and 50,882.38

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Solution

The fourth proportional to 91,172.39, 125,805.35 and 50,882.38 is: 70,210.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,172.39 : 125,805.35 = 50,882.38 : x
  2. Step 2: Convert to fraction form
    91,172.39/125,805.35 = 50,882.38/x
  3. Step 3: Cross multiply
    91,172.39x = 125,805.35 × 50,882.38
  4. Step 4: Simplify right side
    91,172.39x = 6,401,275,437.43
  5. Step 5: Solve for x
    x = 6,401,275,437.43/91,172.39
  6. Step 6: Final answer
    x = 70,210.68

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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.