Home / 40,564,042.28-55,978,286.46-21,979,689.56

Finding the Fourth Proportional to 40,564,042.28, 55,978,286.46 and 21,979,689.56

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Solution

The fourth proportional to 40,564,042.28, 55,978,286.46 and 21,979,689.56 is: 30,331,921.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,564,042.28 : 55,978,286.46 = 21,979,689.56 : x
  2. Step 2: Convert to fraction form
    40,564,042.28/55,978,286.46 = 21,979,689.56/x
  3. Step 3: Cross multiply
    40,564,042.28x = 55,978,286.46 × 21,979,689.56
  4. Step 4: Simplify right side
    40,564,042.28x = 1,230,385,358,491,551.25
  5. Step 5: Solve for x
    x = 1,230,385,358,491,551.25/40,564,042.28
  6. Step 6: Final answer
    x = 30,331,921.80

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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.