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Finding the Fourth Proportional to 172,600.42, 258,939.84 and 52,668.09

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Solution

The fourth proportional to 172,600.42, 258,939.84 and 52,668.09 is: 79,014.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,600.42 : 258,939.84 = 52,668.09 : x
  2. Step 2: Convert to fraction form
    172,600.42/258,939.84 = 52,668.09/x
  3. Step 3: Cross multiply
    172,600.42x = 258,939.84 × 52,668.09
  4. Step 4: Simplify right side
    172,600.42x = 13,637,866,797.71
  5. Step 5: Solve for x
    x = 13,637,866,797.71/172,600.42
  6. Step 6: Final answer
    x = 79,014.10

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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.