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Finding the Fourth Proportional to 71,930.46, 99,264.04 and 40,101.42

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Solution

The fourth proportional to 71,930.46, 99,264.04 and 40,101.42 is: 55,339.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,930.46 : 99,264.04 = 40,101.42 : x
  2. Step 2: Convert to fraction form
    71,930.46/99,264.04 = 40,101.42/x
  3. Step 3: Cross multiply
    71,930.46x = 99,264.04 × 40,101.42
  4. Step 4: Simplify right side
    71,930.46x = 3,980,628,958.94
  5. Step 5: Solve for x
    x = 3,980,628,958.94/71,930.46
  6. Step 6: Final answer
    x = 55,339.96

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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.