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Finding the Fourth Proportional to 79,311.80, 118,961.52 and 29,368.40

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Solution

The fourth proportional to 79,311.80, 118,961.52 and 29,368.40 is: 44,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,311.80 : 118,961.52 = 29,368.40 : x
  2. Step 2: Convert to fraction form
    79,311.80/118,961.52 = 29,368.40/x
  3. Step 3: Cross multiply
    79,311.80x = 118,961.52 × 29,368.40
  4. Step 4: Simplify right side
    79,311.80x = 3,493,709,503.97
  5. Step 5: Solve for x
    x = 3,493,709,503.97/79,311.80
  6. Step 6: Final answer
    x = 44,050.31

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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.