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Finding the Fourth Proportional to 107,969.20, 161,905.20 and 41,387.20

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Solution

The fourth proportional to 107,969.20, 161,905.20 and 41,387.20 is: 62,062.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,969.20 : 161,905.20 = 41,387.20 : x
  2. Step 2: Convert to fraction form
    107,969.20/161,905.20 = 41,387.20/x
  3. Step 3: Cross multiply
    107,969.20x = 161,905.20 × 41,387.20
  4. Step 4: Simplify right side
    107,969.20x = 6,700,802,893.44
  5. Step 5: Solve for x
    x = 6,700,802,893.44/107,969.20
  6. Step 6: Final answer
    x = 62,062.17

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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.