Home / 78,157.59-117,247.32-25,556.60

Finding the Fourth Proportional to 78,157.59, 117,247.32 and 25,556.60

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Solution

The fourth proportional to 78,157.59, 117,247.32 and 25,556.60 is: 38,338.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,157.59 : 117,247.32 = 25,556.60 : x
  2. Step 2: Convert to fraction form
    78,157.59/117,247.32 = 25,556.60/x
  3. Step 3: Cross multiply
    78,157.59x = 117,247.32 × 25,556.60
  4. Step 4: Simplify right side
    78,157.59x = 2,996,442,272.08
  5. Step 5: Solve for x
    x = 2,996,442,272.08/78,157.59
  6. Step 6: Final answer
    x = 38,338.47

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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.