Home / 67,121.73-100,643.45-51,918.57

Finding the Fourth Proportional to 67,121.73, 100,643.45 and 51,918.57

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Solution

The fourth proportional to 67,121.73, 100,643.45 and 51,918.57 is: 77,847.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,121.73 : 100,643.45 = 51,918.57 : x
  2. Step 2: Convert to fraction form
    67,121.73/100,643.45 = 51,918.57/x
  3. Step 3: Cross multiply
    67,121.73x = 100,643.45 × 51,918.57
  4. Step 4: Simplify right side
    67,121.73x = 5,225,263,744.27
  5. Step 5: Solve for x
    x = 5,225,263,744.27/67,121.73
  6. Step 6: Final answer
    x = 77,847.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.