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Finding the Fourth Proportional to 79,215.69, 118,817.77 and 29,272.51

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Solution

The fourth proportional to 79,215.69, 118,817.77 and 29,272.51 is: 43,906.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,215.69 : 118,817.77 = 29,272.51 : x
  2. Step 2: Convert to fraction form
    79,215.69/118,817.77 = 29,272.51/x
  3. Step 3: Cross multiply
    79,215.69x = 118,817.77 × 29,272.51
  4. Step 4: Simplify right side
    79,215.69x = 3,478,094,360.50
  5. Step 5: Solve for x
    x = 3,478,094,360.50/79,215.69
  6. Step 6: Final answer
    x = 43,906.63

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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.