Home / 78,512.72-117,800.57-28,596.26

Finding the Fourth Proportional to 78,512.72, 117,800.57 and 28,596.26

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Solution

The fourth proportional to 78,512.72, 117,800.57 and 28,596.26 is: 42,905.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,512.72 : 117,800.57 = 28,596.26 : x
  2. Step 2: Convert to fraction form
    78,512.72/117,800.57 = 28,596.26/x
  3. Step 3: Cross multiply
    78,512.72x = 117,800.57 × 28,596.26
  4. Step 4: Simplify right side
    78,512.72x = 3,368,656,093.86
  5. Step 5: Solve for x
    x = 3,368,656,093.86/78,512.72
  6. Step 6: Final answer
    x = 42,905.87

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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.