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Finding the Fourth Proportional to 80,825.94, 121,238.91 and 28,235.88

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Solution

The fourth proportional to 80,825.94, 121,238.91 and 28,235.88 is: 42,353.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,825.94 : 121,238.91 = 28,235.88 : x
  2. Step 2: Convert to fraction form
    80,825.94/121,238.91 = 28,235.88/x
  3. Step 3: Cross multiply
    80,825.94x = 121,238.91 × 28,235.88
  4. Step 4: Simplify right side
    80,825.94x = 3,423,287,314.09
  5. Step 5: Solve for x
    x = 3,423,287,314.09/80,825.94
  6. Step 6: Final answer
    x = 42,353.82

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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.