Home / 52,091.84-78,137.65-18,811.91

Finding the Fourth Proportional to 52,091.84, 78,137.65 and 18,811.91

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Solution

The fourth proportional to 52,091.84, 78,137.65 and 18,811.91 is: 28,217.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,091.84 : 78,137.65 = 18,811.91 : x
  2. Step 2: Convert to fraction form
    52,091.84/78,137.65 = 18,811.91/x
  3. Step 3: Cross multiply
    52,091.84x = 78,137.65 × 18,811.91
  4. Step 4: Simplify right side
    52,091.84x = 1,469,918,552.45
  5. Step 5: Solve for x
    x = 1,469,918,552.45/52,091.84
  6. Step 6: Final answer
    x = 28,217.83

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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.