Home / 81,180.84-121,771.28-53,124.52

Finding the Fourth Proportional to 81,180.84, 121,771.28 and 53,124.52

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Solution

The fourth proportional to 81,180.84, 121,771.28 and 53,124.52 is: 79,686.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,180.84 : 121,771.28 = 53,124.52 : x
  2. Step 2: Convert to fraction form
    81,180.84/121,771.28 = 53,124.52/x
  3. Step 3: Cross multiply
    81,180.84x = 121,771.28 × 53,124.52
  4. Step 4: Simplify right side
    81,180.84x = 6,469,040,799.79
  5. Step 5: Solve for x
    x = 6,469,040,799.79/81,180.84
  6. Step 6: Final answer
    x = 79,686.79

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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.