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Finding the Fourth Proportional to 75,086.60, 103,619.70 and 41,553.80

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Solution

The fourth proportional to 75,086.60, 103,619.70 and 41,553.80 is: 57,344.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,086.60 : 103,619.70 = 41,553.80 : x
  2. Step 2: Convert to fraction form
    75,086.60/103,619.70 = 41,553.80/x
  3. Step 3: Cross multiply
    75,086.60x = 103,619.70 × 41,553.80
  4. Step 4: Simplify right side
    75,086.60x = 4,305,792,289.86
  5. Step 5: Solve for x
    x = 4,305,792,289.86/75,086.60
  6. Step 6: Final answer
    x = 57,344.35

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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.