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Finding the Fourth Proportional to 115,046.58, 172,620.14 and 40,220.45

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Solution

The fourth proportional to 115,046.58, 172,620.14 and 40,220.45 is: 60,348.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,046.58 : 172,620.14 = 40,220.45 : x
  2. Step 2: Convert to fraction form
    115,046.58/172,620.14 = 40,220.45/x
  3. Step 3: Cross multiply
    115,046.58x = 172,620.14 × 40,220.45
  4. Step 4: Simplify right side
    115,046.58x = 6,942,858,645.66
  5. Step 5: Solve for x
    x = 6,942,858,645.66/115,046.58
  6. Step 6: Final answer
    x = 60,348.24

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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.