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Finding the Fourth Proportional to 87,390.88, 120,599.44 and 49,664.16

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Solution

The fourth proportional to 87,390.88, 120,599.44 and 49,664.16 is: 68,536.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,390.88 : 120,599.44 = 49,664.16 : x
  2. Step 2: Convert to fraction form
    87,390.88/120,599.44 = 49,664.16/x
  3. Step 3: Cross multiply
    87,390.88x = 120,599.44 × 49,664.16
  4. Step 4: Simplify right side
    87,390.88x = 5,989,469,884.07
  5. Step 5: Solve for x
    x = 5,989,469,884.07/87,390.88
  6. Step 6: Final answer
    x = 68,536.56

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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.