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Finding the Fourth Proportional to 88,180.43, 121,687.89 and 49,938.90

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Solution

The fourth proportional to 88,180.43, 121,687.89 and 49,938.90 is: 68,915.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,180.43 : 121,687.89 = 49,938.90 : x
  2. Step 2: Convert to fraction form
    88,180.43/121,687.89 = 49,938.90/x
  3. Step 3: Cross multiply
    88,180.43x = 121,687.89 × 49,938.90
  4. Step 4: Simplify right side
    88,180.43x = 6,076,959,369.92
  5. Step 5: Solve for x
    x = 6,076,959,369.92/88,180.43
  6. Step 6: Final answer
    x = 68,915.06

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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.