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Finding the Fourth Proportional to 78,668.70, 118,046.25 and 37,114.62

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Solution

The fourth proportional to 78,668.70, 118,046.25 and 37,114.62 is: 55,692.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,668.70 : 118,046.25 = 37,114.62 : x
  2. Step 2: Convert to fraction form
    78,668.70/118,046.25 = 37,114.62/x
  3. Step 3: Cross multiply
    78,668.70x = 118,046.25 × 37,114.62
  4. Step 4: Simplify right side
    78,668.70x = 4,381,241,711.18
  5. Step 5: Solve for x
    x = 4,381,241,711.18/78,668.70
  6. Step 6: Final answer
    x = 55,692.31

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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.