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Finding the Fourth Proportional to 79,590, 109,827 and 43,781.52

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Solution

The fourth proportional to 79,590, 109,827 and 43,781.52 is: 60,414.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,590 : 109,827 = 43,781.52 : x
  2. Step 2: Convert to fraction form
    79,590/109,827 = 43,781.52/x
  3. Step 3: Cross multiply
    79,590x = 109,827 × 43,781.52
  4. Step 4: Simplify right side
    79,590x = 4,808,392,997.04
  5. Step 5: Solve for x
    x = 4,808,392,997.04/79,590
  6. Step 6: Final answer
    x = 60,414.54

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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.