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Finding the Fourth Proportional to 87,630.74, 120,930.46 and 47,344.48

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Solution

The fourth proportional to 87,630.74, 120,930.46 and 47,344.48 is: 65,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,630.74 : 120,930.46 = 47,344.48 : x
  2. Step 2: Convert to fraction form
    87,630.74/120,930.46 = 47,344.48/x
  3. Step 3: Cross multiply
    87,630.74x = 120,930.46 × 47,344.48
  4. Step 4: Simplify right side
    87,630.74x = 5,725,389,744.86
  5. Step 5: Solve for x
    x = 5,725,389,744.86/87,630.74
  6. Step 6: Final answer
    x = 65,335.40

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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.