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Finding the Fourth Proportional to 78,796.03, 118,178.16 and 28,859.08

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Solution

The fourth proportional to 78,796.03, 118,178.16 and 28,859.08 is: 43,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,796.03 : 118,178.16 = 28,859.08 : x
  2. Step 2: Convert to fraction form
    78,796.03/118,178.16 = 28,859.08/x
  3. Step 3: Cross multiply
    78,796.03x = 118,178.16 × 28,859.08
  4. Step 4: Simplify right side
    78,796.03x = 3,410,512,570.03
  5. Step 5: Solve for x
    x = 3,410,512,570.03/78,796.03
  6. Step 6: Final answer
    x = 43,282.80

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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.