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Finding the Fourth Proportional to 71,865.35, 99,174.21 and 41,668.28

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Solution

The fourth proportional to 71,865.35, 99,174.21 and 41,668.28 is: 57,502.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,865.35 : 99,174.21 = 41,668.28 : x
  2. Step 2: Convert to fraction form
    71,865.35/99,174.21 = 41,668.28/x
  3. Step 3: Cross multiply
    71,865.35x = 99,174.21 × 41,668.28
  4. Step 4: Simplify right side
    71,865.35x = 4,132,418,751.06
  5. Step 5: Solve for x
    x = 4,132,418,751.06/71,865.35
  6. Step 6: Final answer
    x = 57,502.24

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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.