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Finding the Fourth Proportional to 71,930.44, 99,264.44 and 40,101.36

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Solution

The fourth proportional to 71,930.44, 99,264.44 and 40,101.36 is: 55,340.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,930.44 : 99,264.44 = 40,101.36 : x
  2. Step 2: Convert to fraction form
    71,930.44/99,264.44 = 40,101.36/x
  3. Step 3: Cross multiply
    71,930.44x = 99,264.44 × 40,101.36
  4. Step 4: Simplify right side
    71,930.44x = 3,980,639,043.64
  5. Step 5: Solve for x
    x = 3,980,639,043.64/71,930.44
  6. Step 6: Final answer
    x = 55,340.12

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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.