Home / 52,079.45-78,122.82-20,914.70

Finding the Fourth Proportional to 52,079.45, 78,122.82 and 20,914.70

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Solution

The fourth proportional to 52,079.45, 78,122.82 and 20,914.70 is: 31,373.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,079.45 : 78,122.82 = 20,914.70 : x
  2. Step 2: Convert to fraction form
    52,079.45/78,122.82 = 20,914.70/x
  3. Step 3: Cross multiply
    52,079.45x = 78,122.82 × 20,914.70
  4. Step 4: Simplify right side
    52,079.45x = 1,633,914,952.84
  5. Step 5: Solve for x
    x = 1,633,914,952.84/52,079.45
  6. Step 6: Final answer
    x = 31,373.51

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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.