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Finding the Fourth Proportional to 85,356.45, 127,962.38 and 35,405.37

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Solution

The fourth proportional to 85,356.45, 127,962.38 and 35,405.37 is: 53,078.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,356.45 : 127,962.38 = 35,405.37 : x
  2. Step 2: Convert to fraction form
    85,356.45/127,962.38 = 35,405.37/x
  3. Step 3: Cross multiply
    85,356.45x = 127,962.38 × 35,405.37
  4. Step 4: Simplify right side
    85,356.45x = 4,530,555,232.95
  5. Step 5: Solve for x
    x = 4,530,555,232.95/85,356.45
  6. Step 6: Final answer
    x = 53,078.07

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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.