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Finding the Fourth Proportional to 172,656.47, 258,960.11 and 54,324.74

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Solution

The fourth proportional to 172,656.47, 258,960.11 and 54,324.74 is: 81,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,656.47 : 258,960.11 = 54,324.74 : x
  2. Step 2: Convert to fraction form
    172,656.47/258,960.11 = 54,324.74/x
  3. Step 3: Cross multiply
    172,656.47x = 258,960.11 × 54,324.74
  4. Step 4: Simplify right side
    172,656.47x = 14,067,939,565.25
  5. Step 5: Solve for x
    x = 14,067,939,565.25/172,656.47
  6. Step 6: Final answer
    x = 81,479.36

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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.