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Finding the Fourth Proportional to 107,603.40, 161,405.10 and 41,939.40

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Solution

The fourth proportional to 107,603.40, 161,405.10 and 41,939.40 is: 62,909.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,603.40 : 161,405.10 = 41,939.40 : x
  2. Step 2: Convert to fraction form
    107,603.40/161,405.10 = 41,939.40/x
  3. Step 3: Cross multiply
    107,603.40x = 161,405.10 × 41,939.40
  4. Step 4: Simplify right side
    107,603.40x = 6,769,233,050.94
  5. Step 5: Solve for x
    x = 6,769,233,050.94/107,603.40
  6. Step 6: Final answer
    x = 62,909.10

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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.