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Finding the Fourth Proportional to 67,945, 101,854.63 and 25,812.45

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Solution

The fourth proportional to 67,945, 101,854.63 and 25,812.45 is: 38,694.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,945 : 101,854.63 = 25,812.45 : x
  2. Step 2: Convert to fraction form
    67,945/101,854.63 = 25,812.45/x
  3. Step 3: Cross multiply
    67,945x = 101,854.63 × 25,812.45
  4. Step 4: Simplify right side
    67,945x = 2,629,117,544.14
  5. Step 5: Solve for x
    x = 2,629,117,544.14/67,945
  6. Step 6: Final answer
    x = 38,694.79

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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.