Home / 87,767.21-121,133.24-53,794.60

Finding the Fourth Proportional to 87,767.21, 121,133.24 and 53,794.60

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Solution

The fourth proportional to 87,767.21, 121,133.24 and 53,794.60 is: 74,245.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,767.21 : 121,133.24 = 53,794.60 : x
  2. Step 2: Convert to fraction form
    87,767.21/121,133.24 = 53,794.60/x
  3. Step 3: Cross multiply
    87,767.21x = 121,133.24 × 53,794.60
  4. Step 4: Simplify right side
    87,767.21x = 6,516,313,822.43
  5. Step 5: Solve for x
    x = 6,516,313,822.43/87,767.21
  6. Step 6: Final answer
    x = 74,245.42

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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.