Home / 78,826.16-108,745.80-51,934.16

Finding the Fourth Proportional to 78,826.16, 108,745.80 and 51,934.16

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Solution

The fourth proportional to 78,826.16, 108,745.80 and 51,934.16 is: 71,646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,826.16 : 108,745.80 = 51,934.16 : x
  2. Step 2: Convert to fraction form
    78,826.16/108,745.80 = 51,934.16/x
  3. Step 3: Cross multiply
    78,826.16x = 108,745.80 × 51,934.16
  4. Step 4: Simplify right side
    78,826.16x = 5,647,621,776.53
  5. Step 5: Solve for x
    x = 5,647,621,776.53/78,826.16
  6. Step 6: Final answer
    x = 71,646.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.