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Finding the Fourth Proportional to 77,449.76, 116,161.22 and 21,276.48

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Solution

The fourth proportional to 77,449.76, 116,161.22 and 21,276.48 is: 31,911.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,449.76 : 116,161.22 = 21,276.48 : x
  2. Step 2: Convert to fraction form
    77,449.76/116,161.22 = 21,276.48/x
  3. Step 3: Cross multiply
    77,449.76x = 116,161.22 × 21,276.48
  4. Step 4: Simplify right side
    77,449.76x = 2,471,501,874.11
  5. Step 5: Solve for x
    x = 2,471,501,874.11/77,449.76
  6. Step 6: Final answer
    x = 31,911.03

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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.