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Finding the Fourth Proportional to 107,911.80, 161,886.20 and 33,030.09

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Solution

The fourth proportional to 107,911.80, 161,886.20 and 33,030.09 is: 49,550.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,911.80 : 161,886.20 = 33,030.09 : x
  2. Step 2: Convert to fraction form
    107,911.80/161,886.20 = 33,030.09/x
  3. Step 3: Cross multiply
    107,911.80x = 161,886.20 × 33,030.09
  4. Step 4: Simplify right side
    107,911.80x = 5,347,115,590.61
  5. Step 5: Solve for x
    x = 5,347,115,590.61/107,911.80
  6. Step 6: Final answer
    x = 49,550.80

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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.