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Finding the Fourth Proportional to 92,279.83, 138,419.79 and 25,721.68

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Solution

The fourth proportional to 92,279.83, 138,419.79 and 25,721.68 is: 38,582.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,279.83 : 138,419.79 = 25,721.68 : x
  2. Step 2: Convert to fraction form
    92,279.83/138,419.79 = 25,721.68/x
  3. Step 3: Cross multiply
    92,279.83x = 138,419.79 × 25,721.68
  4. Step 4: Simplify right side
    92,279.83x = 3,560,389,544.05
  5. Step 5: Solve for x
    x = 3,560,389,544.05/92,279.83
  6. Step 6: Final answer
    x = 38,582.53

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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.