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Finding the Fourth Proportional to 78,842.88, 118,287.36 and 37,232.64

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Solution

The fourth proportional to 78,842.88, 118,287.36 and 37,232.64 is: 55,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,842.88 : 118,287.36 = 37,232.64 : x
  2. Step 2: Convert to fraction form
    78,842.88/118,287.36 = 37,232.64/x
  3. Step 3: Cross multiply
    78,842.88x = 118,287.36 × 37,232.64
  4. Step 4: Simplify right side
    78,842.88x = 4,404,150,691.43
  5. Step 5: Solve for x
    x = 4,404,150,691.43/78,842.88
  6. Step 6: Final answer
    x = 55,859.84

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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.