Home / 90,787.14-125,251.79-56,315.88

Finding the Fourth Proportional to 90,787.14, 125,251.79 and 56,315.88

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Solution

The fourth proportional to 90,787.14, 125,251.79 and 56,315.88 is: 77,694.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,787.14 : 125,251.79 = 56,315.88 : x
  2. Step 2: Convert to fraction form
    90,787.14/125,251.79 = 56,315.88/x
  3. Step 3: Cross multiply
    90,787.14x = 125,251.79 × 56,315.88
  4. Step 4: Simplify right side
    90,787.14x = 7,053,664,493.85
  5. Step 5: Solve for x
    x = 7,053,664,493.85/90,787.14
  6. Step 6: Final answer
    x = 77,694.53

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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.