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Finding the Fourth Proportional to 115,122, 172,781.42 and 45,050.52

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Solution

The fourth proportional to 115,122, 172,781.42 and 45,050.52 is: 67,614.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,122 : 172,781.42 = 45,050.52 : x
  2. Step 2: Convert to fraction form
    115,122/172,781.42 = 45,050.52/x
  3. Step 3: Cross multiply
    115,122x = 172,781.42 × 45,050.52
  4. Step 4: Simplify right side
    115,122x = 7,783,892,592.09
  5. Step 5: Solve for x
    x = 7,783,892,592.09/115,122
  6. Step 6: Final answer
    x = 67,614.29

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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.