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Finding the Fourth Proportional to 270,580.06, 405,755.88 and 81,067.35

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Solution

The fourth proportional to 270,580.06, 405,755.88 and 81,067.35 is: 121,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,580.06 : 405,755.88 = 81,067.35 : x
  2. Step 2: Convert to fraction form
    270,580.06/405,755.88 = 81,067.35/x
  3. Step 3: Cross multiply
    270,580.06x = 405,755.88 × 81,067.35
  4. Step 4: Simplify right side
    270,580.06x = 32,893,553,938.52
  5. Step 5: Solve for x
    x = 32,893,553,938.52/270,580.06
  6. Step 6: Final answer
    x = 121,566.81

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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.