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Finding the Fourth Proportional to 87,453.66, 120,674.97 and 49,728.72

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Solution

The fourth proportional to 87,453.66, 120,674.97 and 49,728.72 is: 68,619.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,453.66 : 120,674.97 = 49,728.72 : x
  2. Step 2: Convert to fraction form
    87,453.66/120,674.97 = 49,728.72/x
  3. Step 3: Cross multiply
    87,453.66x = 120,674.97 × 49,728.72
  4. Step 4: Simplify right side
    87,453.66x = 6,001,011,794.14
  5. Step 5: Solve for x
    x = 6,001,011,794.14/87,453.66
  6. Step 6: Final answer
    x = 68,619.33

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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.