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Finding the Fourth Proportional to 79,234.25, 109,343.28 and 43,425.68

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Solution

The fourth proportional to 79,234.25, 109,343.28 and 43,425.68 is: 59,927.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,234.25 : 109,343.28 = 43,425.68 : x
  2. Step 2: Convert to fraction form
    79,234.25/109,343.28 = 43,425.68/x
  3. Step 3: Cross multiply
    79,234.25x = 109,343.28 × 43,425.68
  4. Step 4: Simplify right side
    79,234.25x = 4,748,306,287.43
  5. Step 5: Solve for x
    x = 4,748,306,287.43/79,234.25
  6. Step 6: Final answer
    x = 59,927.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.