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Finding the Fourth Proportional to 140,418.88, 210,586.70 and 40,579.97

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Solution

The fourth proportional to 140,418.88, 210,586.70 and 40,579.97 is: 60,857.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,418.88 : 210,586.70 = 40,579.97 : x
  2. Step 2: Convert to fraction form
    140,418.88/210,586.70 = 40,579.97/x
  3. Step 3: Cross multiply
    140,418.88x = 210,586.70 × 40,579.97
  4. Step 4: Simplify right side
    140,418.88x = 8,545,601,016.92
  5. Step 5: Solve for x
    x = 8,545,601,016.92/140,418.88
  6. Step 6: Final answer
    x = 60,857.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.