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Finding the Fourth Proportional to 77,383.86, 116,066.70 and 21,229.64

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Solution

The fourth proportional to 77,383.86, 116,066.70 and 21,229.64 is: 31,841.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,383.86 : 116,066.70 = 21,229.64 : x
  2. Step 2: Convert to fraction form
    77,383.86/116,066.70 = 21,229.64/x
  3. Step 3: Cross multiply
    77,383.86x = 116,066.70 × 21,229.64
  4. Step 4: Simplify right side
    77,383.86x = 2,464,054,256.99
  5. Step 5: Solve for x
    x = 2,464,054,256.99/77,383.86
  6. Step 6: Final answer
    x = 31,841.97

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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.