Home / 78,050.79-117,137.75-40,098.54

Finding the Fourth Proportional to 78,050.79, 117,137.75 and 40,098.54

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Solution

The fourth proportional to 78,050.79, 117,137.75 and 40,098.54 is: 60,179.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.79 : 117,137.75 = 40,098.54 : x
  2. Step 2: Convert to fraction form
    78,050.79/117,137.75 = 40,098.54/x
  3. Step 3: Cross multiply
    78,050.79x = 117,137.75 × 40,098.54
  4. Step 4: Simplify right side
    78,050.79x = 4,697,052,992.66
  5. Step 5: Solve for x
    x = 4,697,052,992.66/78,050.79
  6. Step 6: Final answer
    x = 60,179.44

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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.