Home / 80,964.36-111,731.32-45,156.64

Finding the Fourth Proportional to 80,964.36, 111,731.32 and 45,156.64

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Solution

The fourth proportional to 80,964.36, 111,731.32 and 45,156.64 is: 62,316.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,964.36 : 111,731.32 = 45,156.64 : x
  2. Step 2: Convert to fraction form
    80,964.36/111,731.32 = 45,156.64/x
  3. Step 3: Cross multiply
    80,964.36x = 111,731.32 × 45,156.64
  4. Step 4: Simplify right side
    80,964.36x = 5,045,410,993.96
  5. Step 5: Solve for x
    x = 5,045,410,993.96/80,964.36
  6. Step 6: Final answer
    x = 62,316.44

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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.