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Finding the Fourth Proportional to 78,846.90, 118,305.45 and 41,397.90

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Solution

The fourth proportional to 78,846.90, 118,305.45 and 41,397.90 is: 62,115.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,846.90 : 118,305.45 = 41,397.90 : x
  2. Step 2: Convert to fraction form
    78,846.90/118,305.45 = 41,397.90/x
  3. Step 3: Cross multiply
    78,846.90x = 118,305.45 × 41,397.90
  4. Step 4: Simplify right side
    78,846.90x = 4,897,597,188.56
  5. Step 5: Solve for x
    x = 4,897,597,188.56/78,846.90
  6. Step 6: Final answer
    x = 62,115.28

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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.