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Finding the Fourth Proportional to 79,407.84, 118,999.78 and 43,885.16

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Solution

The fourth proportional to 79,407.84, 118,999.78 and 43,885.16 is: 65,765.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,407.84 : 118,999.78 = 43,885.16 : x
  2. Step 2: Convert to fraction form
    79,407.84/118,999.78 = 43,885.16/x
  3. Step 3: Cross multiply
    79,407.84x = 118,999.78 × 43,885.16
  4. Step 4: Simplify right side
    79,407.84x = 5,222,324,087.77
  5. Step 5: Solve for x
    x = 5,222,324,087.77/79,407.84
  6. Step 6: Final answer
    x = 65,765.85

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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.