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Finding the Fourth Proportional to 75,911.81, 104,759.13 and 41,920.25

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Solution

The fourth proportional to 75,911.81, 104,759.13 and 41,920.25 is: 57,850.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,911.81 : 104,759.13 = 41,920.25 : x
  2. Step 2: Convert to fraction form
    75,911.81/104,759.13 = 41,920.25/x
  3. Step 3: Cross multiply
    75,911.81x = 104,759.13 × 41,920.25
  4. Step 4: Simplify right side
    75,911.81x = 4,391,528,395.59
  5. Step 5: Solve for x
    x = 4,391,528,395.59/75,911.81
  6. Step 6: Final answer
    x = 57,850.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.