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Finding the Fourth Proportional to 79,378.60, 118,992 and 29,445.34

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Solution

The fourth proportional to 79,378.60, 118,992 and 29,445.34 is: 44,139.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,378.60 : 118,992 = 29,445.34 : x
  2. Step 2: Convert to fraction form
    79,378.60/118,992 = 29,445.34/x
  3. Step 3: Cross multiply
    79,378.60x = 118,992 × 29,445.34
  4. Step 4: Simplify right side
    79,378.60x = 3,503,759,897.28
  5. Step 5: Solve for x
    x = 3,503,759,897.28/79,378.60
  6. Step 6: Final answer
    x = 44,139.86

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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.