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Finding the Fourth Proportional to 172,045.39, 258,067.99 and 53,726.87

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Solution

The fourth proportional to 172,045.39, 258,067.99 and 53,726.87 is: 80,590.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,045.39 : 258,067.99 = 53,726.87 : x
  2. Step 2: Convert to fraction form
    172,045.39/258,067.99 = 53,726.87/x
  3. Step 3: Cross multiply
    172,045.39x = 258,067.99 × 53,726.87
  4. Step 4: Simplify right side
    172,045.39x = 13,865,185,349.89
  5. Step 5: Solve for x
    x = 13,865,185,349.89/172,045.39
  6. Step 6: Final answer
    x = 80,590.28

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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.