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Finding the Fourth Proportional to 78,759.84, 118,119.60 and 23,342.88

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Solution

The fourth proportional to 78,759.84, 118,119.60 and 23,342.88 is: 35,008.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,759.84 : 118,119.60 = 23,342.88 : x
  2. Step 2: Convert to fraction form
    78,759.84/118,119.60 = 23,342.88/x
  3. Step 3: Cross multiply
    78,759.84x = 118,119.60 × 23,342.88
  4. Step 4: Simplify right side
    78,759.84x = 2,757,251,648.45
  5. Step 5: Solve for x
    x = 2,757,251,648.45/78,759.84
  6. Step 6: Final answer
    x = 35,008.34

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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.