Home / 80,872.24-121,302.59-30,261.64

Finding the Fourth Proportional to 80,872.24, 121,302.59 and 30,261.64

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Solution

The fourth proportional to 80,872.24, 121,302.59 and 30,261.64 is: 45,390.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,872.24 : 121,302.59 = 30,261.64 : x
  2. Step 2: Convert to fraction form
    80,872.24/121,302.59 = 30,261.64/x
  3. Step 3: Cross multiply
    80,872.24x = 121,302.59 × 30,261.64
  4. Step 4: Simplify right side
    80,872.24x = 3,670,815,309.65
  5. Step 5: Solve for x
    x = 3,670,815,309.65/80,872.24
  6. Step 6: Final answer
    x = 45,390.30

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1.5x scale

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.