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Finding the Fourth Proportional to 87,604.75, 120,894.60 and 47,860.75

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Solution

The fourth proportional to 87,604.75, 120,894.60 and 47,860.75 is: 66,047.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,604.75 : 120,894.60 = 47,860.75 : x
  2. Step 2: Convert to fraction form
    87,604.75/120,894.60 = 47,860.75/x
  3. Step 3: Cross multiply
    87,604.75x = 120,894.60 × 47,860.75
  4. Step 4: Simplify right side
    87,604.75x = 5,786,106,226.95
  5. Step 5: Solve for x
    x = 5,786,106,226.95/87,604.75
  6. Step 6: Final answer
    x = 66,047.86

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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.