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Finding the Fourth Proportional to 71,329.56, 106,842.60 and 57,939.66

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Solution

The fourth proportional to 71,329.56, 106,842.60 and 57,939.66 is: 86,786.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,329.56 : 106,842.60 = 57,939.66 : x
  2. Step 2: Convert to fraction form
    71,329.56/106,842.60 = 57,939.66/x
  3. Step 3: Cross multiply
    71,329.56x = 106,842.60 × 57,939.66
  4. Step 4: Simplify right side
    71,329.56x = 6,190,423,917.52
  5. Step 5: Solve for x
    x = 6,190,423,917.52/71,329.56
  6. Step 6: Final answer
    x = 86,786.23

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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.