Home / 52,054.25-78,081.82-12,611.40

Finding the Fourth Proportional to 52,054.25, 78,081.82 and 12,611.40

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Solution

The fourth proportional to 52,054.25, 78,081.82 and 12,611.40 is: 18,917.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,054.25 : 78,081.82 = 12,611.40 : x
  2. Step 2: Convert to fraction form
    52,054.25/78,081.82 = 12,611.40/x
  3. Step 3: Cross multiply
    52,054.25x = 78,081.82 × 12,611.40
  4. Step 4: Simplify right side
    52,054.25x = 984,720,811.35
  5. Step 5: Solve for x
    x = 984,720,811.35/52,054.25
  6. Step 6: Final answer
    x = 18,917.20

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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.