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Finding the Fourth Proportional to 172,308.61, 258,475.25 and 45,948.19

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Solution

The fourth proportional to 172,308.61, 258,475.25 and 45,948.19 is: 68,925.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,308.61 : 258,475.25 = 45,948.19 : x
  2. Step 2: Convert to fraction form
    172,308.61/258,475.25 = 45,948.19/x
  3. Step 3: Cross multiply
    172,308.61x = 258,475.25 × 45,948.19
  4. Step 4: Simplify right side
    172,308.61x = 11,876,469,021.37
  5. Step 5: Solve for x
    x = 11,876,469,021.37/172,308.61
  6. Step 6: Final answer
    x = 68,925.57

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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.