Home / 80,229,448.28-120,076,021.78-45,676,574.20

Finding the Fourth Proportional to 80,229,448.28, 120,076,021.78 and 45,676,574.20

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Solution

The fourth proportional to 80,229,448.28, 120,076,021.78 and 45,676,574.20 is: 68,362,196.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,229,448.28 : 120,076,021.78 = 45,676,574.20 : x
  2. Step 2: Convert to fraction form
    80,229,448.28/120,076,021.78 = 45,676,574.20/x
  3. Step 3: Cross multiply
    80,229,448.28x = 120,076,021.78 × 45,676,574.20
  4. Step 4: Simplify right side
    80,229,448.28x = 5,484,661,318,474,986
  5. Step 5: Solve for x
    x = 5,484,661,318,474,986/80,229,448.28
  6. Step 6: Final answer
    x = 68,362,196.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.