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Finding the Fourth Proportional to 79,137.89, 109,210.28 and 43,327.89

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Solution

The fourth proportional to 79,137.89, 109,210.28 and 43,327.89 is: 59,792.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,137.89 : 109,210.28 = 43,327.89 : x
  2. Step 2: Convert to fraction form
    79,137.89/109,210.28 = 43,327.89/x
  3. Step 3: Cross multiply
    79,137.89x = 109,210.28 × 43,327.89
  4. Step 4: Simplify right side
    79,137.89x = 4,731,850,474.92
  5. Step 5: Solve for x
    x = 4,731,850,474.92/79,137.89
  6. Step 6: Final answer
    x = 59,792.48

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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.