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Finding the Fourth Proportional to 115,858.08, 159,887.52 and 65,556

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Solution

The fourth proportional to 115,858.08, 159,887.52 and 65,556 is: 90,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,858.08 : 159,887.52 = 65,556 : x
  2. Step 2: Convert to fraction form
    115,858.08/159,887.52 = 65,556/x
  3. Step 3: Cross multiply
    115,858.08x = 159,887.52 × 65,556
  4. Step 4: Simplify right side
    115,858.08x = 10,481,586,261.12
  5. Step 5: Solve for x
    x = 10,481,586,261.12/115,858.08
  6. Step 6: Final answer
    x = 90,469.19

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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.