Home / 71,946.78-99,286.56-40,115.68

Finding the Fourth Proportional to 71,946.78, 99,286.56 and 40,115.68

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Solution

The fourth proportional to 71,946.78, 99,286.56 and 40,115.68 is: 55,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,946.78 : 99,286.56 = 40,115.68 : x
  2. Step 2: Convert to fraction form
    71,946.78/99,286.56 = 40,115.68/x
  3. Step 3: Cross multiply
    71,946.78x = 99,286.56 × 40,115.68
  4. Step 4: Simplify right side
    71,946.78x = 3,982,947,869.26
  5. Step 5: Solve for x
    x = 3,982,947,869.26/71,946.78
  6. Step 6: Final answer
    x = 55,359.64

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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.