Home / 83,965.83-115,750.43-63,787.68

Finding the Fourth Proportional to 83,965.83, 115,750.43 and 63,787.68

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Solution

The fourth proportional to 83,965.83, 115,750.43 and 63,787.68 is: 87,934.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,965.83 : 115,750.43 = 63,787.68 : x
  2. Step 2: Convert to fraction form
    83,965.83/115,750.43 = 63,787.68/x
  3. Step 3: Cross multiply
    83,965.83x = 115,750.43 × 63,787.68
  4. Step 4: Simplify right side
    83,965.83x = 7,383,451,069.76
  5. Step 5: Solve for x
    x = 7,383,451,069.76/83,965.83
  6. Step 6: Final answer
    x = 87,934.00

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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.