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Finding the Fourth Proportional to 144,939.64, 217,410.10 and 39,759.80

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Solution

The fourth proportional to 144,939.64, 217,410.10 and 39,759.80 is: 59,639.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,939.64 : 217,410.10 = 39,759.80 : x
  2. Step 2: Convert to fraction form
    144,939.64/217,410.10 = 39,759.80/x
  3. Step 3: Cross multiply
    144,939.64x = 217,410.10 × 39,759.80
  4. Step 4: Simplify right side
    144,939.64x = 8,644,182,093.98
  5. Step 5: Solve for x
    x = 8,644,182,093.98/144,939.64
  6. Step 6: Final answer
    x = 59,639.88

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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.