Home / 78,650.42-117,993.15-28,730.44

Finding the Fourth Proportional to 78,650.42, 117,993.15 and 28,730.44

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Solution

The fourth proportional to 78,650.42, 117,993.15 and 28,730.44 is: 43,102.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,650.42 : 117,993.15 = 28,730.44 : x
  2. Step 2: Convert to fraction form
    78,650.42/117,993.15 = 28,730.44/x
  3. Step 3: Cross multiply
    78,650.42x = 117,993.15 × 28,730.44
  4. Step 4: Simplify right side
    78,650.42x = 3,389,995,116.49
  5. Step 5: Solve for x
    x = 3,389,995,116.49/78,650.42
  6. Step 6: Final answer
    x = 43,102.06

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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.