Home / 80,732.16-121,142.88-33,984

Finding the Fourth Proportional to 80,732.16, 121,142.88 and 33,984

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Solution

The fourth proportional to 80,732.16, 121,142.88 and 33,984 is: 50,994.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,732.16 : 121,142.88 = 33,984 : x
  2. Step 2: Convert to fraction form
    80,732.16/121,142.88 = 33,984/x
  3. Step 3: Cross multiply
    80,732.16x = 121,142.88 × 33,984
  4. Step 4: Simplify right side
    80,732.16x = 4,116,919,633.92
  5. Step 5: Solve for x
    x = 4,116,919,633.92/80,732.16
  6. Step 6: Final answer
    x = 50,994.79

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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.