Home / 51,986.21-78,117.82-28,311.32

Finding the Fourth Proportional to 51,986.21, 78,117.82 and 28,311.32

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Solution

The fourth proportional to 51,986.21, 78,117.82 and 28,311.32 is: 42,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,986.21 : 78,117.82 = 28,311.32 : x
  2. Step 2: Convert to fraction form
    51,986.21/78,117.82 = 28,311.32/x
  3. Step 3: Cross multiply
    51,986.21x = 78,117.82 × 28,311.32
  4. Step 4: Simplify right side
    51,986.21x = 2,211,618,724.24
  5. Step 5: Solve for x
    x = 2,211,618,724.24/51,986.21
  6. Step 6: Final answer
    x = 42,542.42

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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.