Home / 83,787.59-115,620-49,326.85

Finding the Fourth Proportional to 83,787.59, 115,620 and 49,326.85

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Solution

The fourth proportional to 83,787.59, 115,620 and 49,326.85 is: 68,067.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,787.59 : 115,620 = 49,326.85 : x
  2. Step 2: Convert to fraction form
    83,787.59/115,620 = 49,326.85/x
  3. Step 3: Cross multiply
    83,787.59x = 115,620 × 49,326.85
  4. Step 4: Simplify right side
    83,787.59x = 5,703,170,107.95
  5. Step 5: Solve for x
    x = 5,703,170,107.95/83,787.59
  6. Step 6: Final answer
    x = 68,067.01

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1.5x scale

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.