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Finding the Fourth Proportional to 172,299.36, 258,428.46 and 45,949.08

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Solution

The fourth proportional to 172,299.36, 258,428.46 and 45,949.08 is: 68,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,299.36 : 258,428.46 = 45,949.08 : x
  2. Step 2: Convert to fraction form
    172,299.36/258,428.46 = 45,949.08/x
  3. Step 3: Cross multiply
    172,299.36x = 258,428.46 × 45,949.08
  4. Step 4: Simplify right side
    172,299.36x = 11,874,549,982.82
  5. Step 5: Solve for x
    x = 11,874,549,982.82/172,299.36
  6. Step 6: Final answer
    x = 68,918.13

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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.