Home / 78,580.32-117,861.84-23,180.64

Finding the Fourth Proportional to 78,580.32, 117,861.84 and 23,180.64

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Solution

The fourth proportional to 78,580.32, 117,861.84 and 23,180.64 is: 34,768.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,580.32 : 117,861.84 = 23,180.64 : x
  2. Step 2: Convert to fraction form
    78,580.32/117,861.84 = 23,180.64/x
  3. Step 3: Cross multiply
    78,580.32x = 117,861.84 × 23,180.64
  4. Step 4: Simplify right side
    78,580.32x = 2,732,112,882.78
  5. Step 5: Solve for x
    x = 2,732,112,882.78/78,580.32
  6. Step 6: Final answer
    x = 34,768.41

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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.