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Finding the Fourth Proportional to 79,137.75, 118,693.67 and 55,693.11

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Solution

The fourth proportional to 79,137.75, 118,693.67 and 55,693.11 is: 83,530.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,137.75 : 118,693.67 = 55,693.11 : x
  2. Step 2: Convert to fraction form
    79,137.75/118,693.67 = 55,693.11/x
  3. Step 3: Cross multiply
    79,137.75x = 118,693.67 × 55,693.11
  4. Step 4: Simplify right side
    79,137.75x = 6,610,419,341.15
  5. Step 5: Solve for x
    x = 6,610,419,341.15/79,137.75
  6. Step 6: Final answer
    x = 83,530.54

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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.