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Finding the Fourth Proportional to 78,697.26, 118,045.62 and 36,571.86

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Solution

The fourth proportional to 78,697.26, 118,045.62 and 36,571.86 is: 54,857.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,697.26 : 118,045.62 = 36,571.86 : x
  2. Step 2: Convert to fraction form
    78,697.26/118,045.62 = 36,571.86/x
  3. Step 3: Cross multiply
    78,697.26x = 118,045.62 × 36,571.86
  4. Step 4: Simplify right side
    78,697.26x = 4,317,147,888.25
  5. Step 5: Solve for x
    x = 4,317,147,888.25/78,697.26
  6. Step 6: Final answer
    x = 54,857.66

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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.