Home / 80,774.79-121,153.54-28,185.27

Finding the Fourth Proportional to 80,774.79, 121,153.54 and 28,185.27

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Solution

The fourth proportional to 80,774.79, 121,153.54 and 28,185.27 is: 42,274.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,774.79 : 121,153.54 = 28,185.27 : x
  2. Step 2: Convert to fraction form
    80,774.79/121,153.54 = 28,185.27/x
  3. Step 3: Cross multiply
    80,774.79x = 121,153.54 × 28,185.27
  4. Step 4: Simplify right side
    80,774.79x = 3,414,745,236.36
  5. Step 5: Solve for x
    x = 3,414,745,236.36/80,774.79
  6. Step 6: Final answer
    x = 42,274.89

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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.