Home / 52,122.94-78,183.77-12,680.09

Finding the Fourth Proportional to 52,122.94, 78,183.77 and 12,680.09

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Solution

The fourth proportional to 52,122.94, 78,183.77 and 12,680.09 is: 19,019.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,122.94 : 78,183.77 = 12,680.09 : x
  2. Step 2: Convert to fraction form
    52,122.94/78,183.77 = 12,680.09/x
  3. Step 3: Cross multiply
    52,122.94x = 78,183.77 × 12,680.09
  4. Step 4: Simplify right side
    52,122.94x = 991,377,240.14
  5. Step 5: Solve for x
    x = 991,377,240.14/52,122.94
  6. Step 6: Final answer
    x = 19,019.98

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1.5x scale

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.