Home / 78,396.26-117,608.56-28,546.32

Finding the Fourth Proportional to 78,396.26, 117,608.56 and 28,546.32

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Solution

The fourth proportional to 78,396.26, 117,608.56 and 28,546.32 is: 42,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,396.26 : 117,608.56 = 28,546.32 : x
  2. Step 2: Convert to fraction form
    78,396.26/117,608.56 = 28,546.32/x
  3. Step 3: Cross multiply
    78,396.26x = 117,608.56 × 28,546.32
  4. Step 4: Simplify right side
    78,396.26x = 3,357,291,958.17
  5. Step 5: Solve for x
    x = 3,357,291,958.17/78,396.26
  6. Step 6: Final answer
    x = 42,824.65

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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.