Home / 83,961.21-115,865.32-45,720.37

Finding the Fourth Proportional to 83,961.21, 115,865.32 and 45,720.37

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Solution

The fourth proportional to 83,961.21, 115,865.32 and 45,720.37 is: 63,093.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,961.21 : 115,865.32 = 45,720.37 : x
  2. Step 2: Convert to fraction form
    83,961.21/115,865.32 = 45,720.37/x
  3. Step 3: Cross multiply
    83,961.21x = 115,865.32 × 45,720.37
  4. Step 4: Simplify right side
    83,961.21x = 5,297,405,935.58
  5. Step 5: Solve for x
    x = 5,297,405,935.58/83,961.21
  6. Step 6: Final answer
    x = 63,093.49

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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.