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Finding the Fourth Proportional to 71,930.76, 99,274.06 and 41,315.88

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Solution

The fourth proportional to 71,930.76, 99,274.06 and 41,315.88 is: 57,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,930.76 : 99,274.06 = 41,315.88 : x
  2. Step 2: Convert to fraction form
    71,930.76/99,274.06 = 41,315.88/x
  3. Step 3: Cross multiply
    71,930.76x = 99,274.06 × 41,315.88
  4. Step 4: Simplify right side
    71,930.76x = 4,101,595,150.07
  5. Step 5: Solve for x
    x = 4,101,595,150.07/71,930.76
  6. Step 6: Final answer
    x = 57,021.43

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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.