Home / 80,871.24-121,301.09-30,260.64

Finding the Fourth Proportional to 80,871.24, 121,301.09 and 30,260.64

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Solution

The fourth proportional to 80,871.24, 121,301.09 and 30,260.64 is: 45,388.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,871.24 : 121,301.09 = 30,260.64 : x
  2. Step 2: Convert to fraction form
    80,871.24/121,301.09 = 30,260.64/x
  3. Step 3: Cross multiply
    80,871.24x = 121,301.09 × 30,260.64
  4. Step 4: Simplify right side
    80,871.24x = 3,670,648,616.10
  5. Step 5: Solve for x
    x = 3,670,648,616.10/80,871.24
  6. Step 6: Final answer
    x = 45,388.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.