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Finding the Fourth Proportional to 87,451.70, 120,662.61 and 49,746.74

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Solution

The fourth proportional to 87,451.70, 120,662.61 and 49,746.74 is: 68,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,451.70 : 120,662.61 = 49,746.74 : x
  2. Step 2: Convert to fraction form
    87,451.70/120,662.61 = 49,746.74/x
  3. Step 3: Cross multiply
    87,451.70x = 120,662.61 × 49,746.74
  4. Step 4: Simplify right side
    87,451.70x = 6,002,571,487.39
  5. Step 5: Solve for x
    x = 6,002,571,487.39/87,451.70
  6. Step 6: Final answer
    x = 68,638.71

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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.