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Finding the Fourth Proportional to 87,958.92, 121,383.46 and 47,672.68

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Solution

The fourth proportional to 87,958.92, 121,383.46 and 47,672.68 is: 65,788.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,958.92 : 121,383.46 = 47,672.68 : x
  2. Step 2: Convert to fraction form
    87,958.92/121,383.46 = 47,672.68/x
  3. Step 3: Cross multiply
    87,958.92x = 121,383.46 × 47,672.68
  4. Step 4: Simplify right side
    87,958.92x = 5,786,674,845.87
  5. Step 5: Solve for x
    x = 5,786,674,845.87/87,958.92
  6. Step 6: Final answer
    x = 65,788.38

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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.