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Finding the Fourth Proportional to 78,680.70, 118,064.25 and 37,126.62

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Solution

The fourth proportional to 78,680.70, 118,064.25 and 37,126.62 is: 55,710.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,680.70 : 118,064.25 = 37,126.62 : x
  2. Step 2: Convert to fraction form
    78,680.70/118,064.25 = 37,126.62/x
  3. Step 3: Cross multiply
    78,680.70x = 118,064.25 × 37,126.62
  4. Step 4: Simplify right side
    78,680.70x = 4,383,326,545.34
  5. Step 5: Solve for x
    x = 4,383,326,545.34/78,680.70
  6. Step 6: Final answer
    x = 55,710.31

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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.