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Finding the Fourth Proportional to 87,481.65, 120,728.61 and 49,254.35

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Solution

The fourth proportional to 87,481.65, 120,728.61 and 49,254.35 is: 67,973.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,481.65 : 120,728.61 = 49,254.35 : x
  2. Step 2: Convert to fraction form
    87,481.65/120,728.61 = 49,254.35/x
  3. Step 3: Cross multiply
    87,481.65x = 120,728.61 × 49,254.35
  4. Step 4: Simplify right side
    87,481.65x = 5,946,408,608.31
  5. Step 5: Solve for x
    x = 5,946,408,608.31/87,481.65
  6. Step 6: Final answer
    x = 67,973.21

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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.