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Finding the Fourth Proportional to 79,615.65, 109,866.87 and 43,805.37

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Solution

The fourth proportional to 79,615.65, 109,866.87 and 43,805.37 is: 60,449.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,615.65 : 109,866.87 = 43,805.37 : x
  2. Step 2: Convert to fraction form
    79,615.65/109,866.87 = 43,805.37/x
  3. Step 3: Cross multiply
    79,615.65x = 109,866.87 × 43,805.37
  4. Step 4: Simplify right side
    79,615.65x = 4,812,758,891.09
  5. Step 5: Solve for x
    x = 4,812,758,891.09/79,615.65
  6. Step 6: Final answer
    x = 60,449.91

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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.