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Finding the Fourth Proportional to 85,787.99, 118,391.78 and 49,475.93

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Solution

The fourth proportional to 85,787.99, 118,391.78 and 49,475.93 is: 68,279.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,787.99 : 118,391.78 = 49,475.93 : x
  2. Step 2: Convert to fraction form
    85,787.99/118,391.78 = 49,475.93/x
  3. Step 3: Cross multiply
    85,787.99x = 118,391.78 × 49,475.93
  4. Step 4: Simplify right side
    85,787.99x = 5,857,542,580.52
  5. Step 5: Solve for x
    x = 5,857,542,580.52/85,787.99
  6. Step 6: Final answer
    x = 68,279.28

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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.