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Finding the Fourth Proportional to 78,781.34, 118,173.60 and 22,623.30

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Solution

The fourth proportional to 78,781.34, 118,173.60 and 22,623.30 is: 33,935.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,781.34 : 118,173.60 = 22,623.30 : x
  2. Step 2: Convert to fraction form
    78,781.34/118,173.60 = 22,623.30/x
  3. Step 3: Cross multiply
    78,781.34x = 118,173.60 × 22,623.30
  4. Step 4: Simplify right side
    78,781.34x = 2,673,476,804.88
  5. Step 5: Solve for x
    x = 2,673,476,804.88/78,781.34
  6. Step 6: Final answer
    x = 33,935.41

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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.