Home / 78,140.68-117,227.45-25,546.03

Finding the Fourth Proportional to 78,140.68, 117,227.45 and 25,546.03

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Solution

The fourth proportional to 78,140.68, 117,227.45 and 25,546.03 is: 38,324.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,140.68 : 117,227.45 = 25,546.03 : x
  2. Step 2: Convert to fraction form
    78,140.68/117,227.45 = 25,546.03/x
  3. Step 3: Cross multiply
    78,140.68x = 117,227.45 × 25,546.03
  4. Step 4: Simplify right side
    78,140.68x = 2,994,695,954.52
  5. Step 5: Solve for x
    x = 2,994,695,954.52/78,140.68
  6. Step 6: Final answer
    x = 38,324.42

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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.