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Finding the Fourth Proportional to 108,390.83, 162,571.86 and 49,212.89

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Solution

The fourth proportional to 108,390.83, 162,571.86 and 49,212.89 is: 73,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,390.83 : 162,571.86 = 49,212.89 : x
  2. Step 2: Convert to fraction form
    108,390.83/162,571.86 = 49,212.89/x
  3. Step 3: Cross multiply
    108,390.83x = 162,571.86 × 49,212.89
  4. Step 4: Simplify right side
    108,390.83x = 8,000,631,063.28
  5. Step 5: Solve for x
    x = 8,000,631,063.28/108,390.83
  6. Step 6: Final answer
    x = 73,812.80

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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.