Home / 52,120.21-78,179.57-12,677.39

Finding the Fourth Proportional to 52,120.21, 78,179.57 and 12,677.39

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Solution

The fourth proportional to 52,120.21, 78,179.57 and 12,677.39 is: 19,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,120.21 : 78,179.57 = 12,677.39 : x
  2. Step 2: Convert to fraction form
    52,120.21/78,179.57 = 12,677.39/x
  3. Step 3: Cross multiply
    52,120.21x = 78,179.57 × 12,677.39
  4. Step 4: Simplify right side
    52,120.21x = 991,112,835.54
  5. Step 5: Solve for x
    x = 991,112,835.54/52,120.21
  6. Step 6: Final answer
    x = 19,015.90

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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.