Home / 85,787.48-118,391.09-49,475.43

Finding the Fourth Proportional to 85,787.48, 118,391.09 and 49,475.43

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Solution

The fourth proportional to 85,787.48, 118,391.09 and 49,475.43 is: 68,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787.48 : 118,391.09 = 49,475.43 : x
  2. Step 2: Convert to fraction form
    85,787.48/118,391.09 = 49,475.43/x
  3. Step 3: Cross multiply
    85,787.48x = 118,391.09 × 49,475.43
  4. Step 4: Simplify right side
    85,787.48x = 5,857,450,588.97
  5. Step 5: Solve for x
    x = 5,857,450,588.97/85,787.48
  6. Step 6: Final answer
    x = 68,278.62

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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.